| CABLE | William | shoemaker | Butler | Prospect | |
| CALER | James | marble works | Prospect | ||
| CALVIN | Benjamin | telegraph operator | boards Springdale | Butler | |
| CALWELL | Joseph | Springdale | Butler | ||
| CAMERON | carpenter | boards White house | Petrolia | ||
| CAMERON | Daniel | tool dresser | boards White house | Petrolia | |
| CAMERON | John | pumper | boards White house | Petrolia | |
| CAMPBELL | Eli | tool dresser | boards White house | Petrolia | |
| CAMPBELL | Findlay | ||||
| CAMPBELL | G M | Lincoln | Butler | ||
| CAMPBELL | George R | Main | Greece City | ||
| CAMPBELL | J G | of J G & W CAMPBELL | northwest Diamond | Butler | |
| CAMPBELL | J T | rig and tank builder | near Centre ave | Millerstown | |
| CAMPBELL | James | Main | Greece City | ||
| CAMPBELL | James | ||||
| CAMPBELL | John | laborer | north Main | Butler | |
| CAMPBELL | Joseph | carpenter | corner Washington and Pearl | Butler | |
| CAMPBELL | Newton | laborer | Lincoln | Butler | |
| CAMPBELL | P T | grocer | Main | Millerstown | residence Front |
| CAMPBELL | Robert | ||||
| CAMPBELL | S A | widow | Lincoln | Butler | |
| CAMPBELL | T C | of McJUNKIN & CAMPBELL | east North | Butler | |
| CAMPBELL | Thompson | Main | Greece City | ||
| CAMPBELL | W | of J G & W CAMPBELL | south Main | Butler | |
| CAMPBELL | William | student | corner Washington and Pearl | Butler | |
| CAMPBELL | William | tinner | Main | Butler | |
| CAMPBELL | William | carpenter | boards White house | Petrolia | |
| CAMPBELL | William, Jr | cashier Butler Savings Bank | south Main | Butler | |
| CAMPBELL J G & W | stoves, tinware stoves, tinware &e. | Main | Butler | ||
| CAMPHIRE | Jacob | clerk | boards corner Green and Mill | Millerstown | |
| CANN | James | Main | Greece City | ||
| CANNAHAN | George | stone mason | Mill | Millerstown | |
| CANNING | William | shoemaker | boards Slippery Rock | Millerstown | |
| CANNON | O W | clerk | Jamison | Petrolia | |
| CANNON | Samuel | Main | Centreville | ||
| CARMADY | sucker rod business | boards Monitor house | Petrolia | ||
| CARNAHAN | Henry | teamster | Etna Springdale | Butler | |
| CARNAHAN | Joseph | distiller | Kittanning road | Butler | |
| CARNAHAN | Mrs R | widow | east Jefferson | Butler | |
| CARNAHAN | William | miner | Springdale | Butler | |
| CARNEY | Thomas | laborer | boards Slippery Rock | Millerstown | |
| CAROTHERS | John | machinist | boards Robbins hotel | Karns City | |
| CARPENTER | J L | wagon maker | Mifflin | Butler | |
| CARRINGER | H C | clerk | Slippery Rock | Millerstown | |
| CARSON | Catharine | widow | Race | Butler | |
| CARSON | H S | harness maker | Main, residence McKean | Butler | |
| CARSON | J C | Main | Greece City | ||
| CARSON | James A | printer | boards Main | Butler | |
| CARTRIGHT | Lyman C | Main | Centreville | ||
| CASEY | Thomas | boiler maker | Slippery Rock | Millerstown | |
| CASPER | Christian | clerk | Slippery Rock | Millerstown | |
| CASSILLY | John | boiler maker | Slippery Rock | Millerstown | |
| CAUFMAN | J L | boards Adams house | Fairview | ||
| CAUFMAN | William | Main | Centreville | ||
| CENTENNIAL HOTEL | A E Sink | proprietor | Railroad | Petrolia | |
| CENTRAL HOTEL | HECKETT J F | prop'r Central Hotel | cor. Main and Cunningham | Butler | |
| CENTRAL HOTEL | J S Book & W M Clark | proprietors | corner Main and Slippery Rock | Millerstown | (late Book House) |
| CENTRAL HOUSE | P Christie | proprietor | Main | Petrolia | |
| CHADEAGUE | S J | Harrisville | |||
| CHAMBERS | John K | book-keeper J T Shirley | boards Petrolia | Karns City | |
| CHAPMAN | F H | oil operator | Main | Fairview | |
| CHAPMAN | G | sucker rods | Slippery Rock | Millerstown | residence Main |
| CHRISTIE | A C | tailor | west Jefferson | Butler | |
| CHRISTIE | C G | attorney | opp. Lowry house, Main | Butler | residence Pearl |
| CHRISTIE | H | of H & J Christie | boards Central house | Petrolia | |
| CHRISTIE | J | of H & J Christie | boards Central house | Petrolia | |
| CHRISTIE | James | contraactor | Main | Fairview | |
| CHRISTIE | P | proprietor Central House | Main | Petrolia | |
| CHRISTIE | T G | book-keeper Butler Savings Bank | Pearl | Butler | |
| CHRISTIE | W A | county commissioner | Centre township | Butler | |
| CHRISTIE H & J | hardware, oil well supplies, &c | Main | Petrolia | ||
| CHRISTLEY | William G | hotel | Main | Centreville | |
| CHRISTY | John | Main | Centreville | ||
| CITY HOTEL | B R Griffin | proprietor | corner Main and Railroad | Petrolia | |
| CLARK | A B | superintendent Mayville Oil Co | residence Mayville farm | Petrolia | |
| CLARK | C M | clerk | Slippery Rock | Millerstown | |
| CLARK | C S | oil operator | boards Central hotel | Millerstown | |
| CLARK | Charles | Main | Greece City | ||
| CLARK | D | lumber | Sheakley farm | Millerstown | |
| CLARK | ISAAC | proprietor Opera House Hotel | Main | Karns City | |
| CLARK | J B | machinist | Modoc | ||
| CLARK | James | clerk Opera House hotel | Karns City | ||
| CLARK | Robert | livery | north Main | Butler | |
| CLARK | Robert | of CLARK & GRAHAM | Main | Butler | |
| CLARK | S C | jeweller | Main near Argyle | Petrolia | |
| CLARK | T B | oil operator | Main | Fairview | |
| CLARK | Thomas N | Harrisville | |||
| CLARK | W M | of Book & Clark | Central hotel | Millerstown | |
| CLARK & GRAHAM | livery stable | alley near Main | Butler | ||
| CLAWSON | S | cook | Boulger house | Petrolia | |
| CLEELAND | William | Portersville | |||
| CLEMENGER | Frank | oil operator | boards Central hotel | Millerstown | |
| CLEVELAND | E | butcher | boards European hotel | Millerstown | |
| CLIFFORD | H | boards Adam house | Fairview | ||
| CLIFFORD | T G | of Shaney & Clifford | Slippery Rock | Millerstown | |
| CLINE | J M | Main | Centreville | ||
| CLINGLER | F J | book-keeper German National Bank | res Green | Millerstown | |
| CLUXTON | C F | physician | Fairview | Petrolia | |
| COCHER | Mrs F R | confectionery | east Jefferson | Butler | |
| COCHRAN | Eliza | Harrisville | |||
| COCHRAN | John F | of COCHRAN & KELLY | North | Butler | |
| COCHRAN | L | widow | north McKean | Butler | |
| COCHRAN | L M | clerk of the courts | corner McKean and Clay | Butler | |
| COCHRAN | O P | photographer | Main, residence | Butler | residence, north McKean |
| COCHRAN | Wilson | Harrisville | |||
| COCHRAN & KELLY | hardware, iron & nails, &e | Jefferson | Butler | ||
| COCHRAN & KELLY | hardware, iron, nails, &e | east Jefferson | Butler | ||
| COFFIN | S C | livery stable | rear of Central house | Petrolia | |
| COGAN | JAMES | Saloon and Boarding House | Mill | Millerstown | |
| COGAN | John | driller | boards Mill | Millerstown | |
| COGAN | Sylvester A | driller | boards Mill | Millerstown | |
| COLBACK | Balser | Main | Zelienople | ||
| COLBERT | Harvey | hats and caps | Main | Butler | residence north Main |
| COLBERT | William | engineer | Washington | Butler | |
| COLBY | O D | burgess | Slippery Rock | Millerstown | |
| COLBY | S C | pumper | boards Adams house | Fairview | |
| COLDER | George O | gauger Grant Line | boards Weaver house | Millerstown | |
| COLE | A | billiard room | Main | Millerstown | |
| COLEMAN | C W | painter | boards Reiber house | Millerstown | |
| COLEMAN | George | clerk | Coleman's European hotel | Millerstown | |
| COLEMAN | James | waiter | Fairview | Petrolia | |
| COLEMAN | MRS. A H | proprietress Coleman's European hotel | Millerstown | ||
| COLEMAN'S EUROPEAN HOTEL | Mrs. A H Coleman | proprietress | Main | Millerstown | |
| COLLINS | HUGH | proprietor Oil Exchange Hotel | Main | Petrolia | |
| COLUMBIA CONDUIT CO | OFFICE | Main | Millerstown | ||
| COLUMBIA CONDUIT COMPANY | office near Railroad | Petrolia | |||
| COMER | Jacob | butcher | boards Main | Butler | |
| COMERFORD | William | saloon | Fairview | Petrolia | |
| COMPTON | Murat | book-keeper United Pipe Lines | residence near Union | Petrolia | |
| CONANT | J D | grocer | boards Forest house | Petrolia | |
| CONANT | S F | grocer | Slippery Rock | Millerstown | |
| CONANT | S F | grocery and bakery | Main | Petrolia | res Millerstown |
| CONKLE | F A | oil producer | boards Lowry house | Butler | |
| CONN | Eli | Springdale | Butler | ||
| CONN | W R | attorney | Diamond | Butler | residence Penn |
| CONNELLY | Elizabeth | laundry | Jefferson | Butler | |
| CONNELLY | W | of Connelly Bros | boards Central house | Petrolia | |
| CONNELLY BROS | boiler works | Railroad | Petrolia | ||
| CONNIE | Thomas | driller | boards Main | Karns City | |
| CONNOR | James | carpenter | boards Apollo house | Karns City | |
| CONVERY | James | laborer | Springdale | Butler | |
| CONVERY | James | teamster | boards Eitenmuller house | Butler | |
| CONWAY | Alfred | Thompson | Greece City | ||
| CONWAY | G P | clerk | Main | Fairview | |
| CONWAY | Michael | teamster | North | Butler | |
| CONWAY | P W | ||||
| COOK | John | clerk | boards Main | Butler | |
| COOK | M N | Main | Centreville | ||
| COOK | Milton | Main | Centreville | ||
| COOK | S W | tank builder | boards City hotel | Petrolia | |
| COOPER | A | hostler | Green | Millerstown | |
| COOPER | C P | pumper | Main | Fairview | |
| COOPER | Ephraim | Main | Centreville | ||
| COOPER | Henry | shoemaker | Evansburg | ||
| COOPER | J M | book-keeper H L Taylor & Co | boards Central hotel | Petrolia | |
| COOPER | M | boards Oil Exchange | Petrolia | ||
| COOPER | Rebecca | widow | Main | Centreville | |
| COOPER | Rev D C | Presbyterian | New Castle | Centreville | |
| COOPER SAMUEL & CO | boots and shoes | Evansburg | |||
| COOVERT | Milton | Main | Centreville | ||
| COOVERT | Perry | tanner | Main | Centreville | |
| CORAH | John | manager Grand Central billiard room | Karns City | ||
| CORBAN | Frank | painter | Central ave | Millerstown | |
| CORE | Michael | carpenter | Jamison | Petrolia | |
| CORE | N C | Main | Greece City | ||
| CORNELIUS | W S | Main | Greece City | ||
| CORNELL | David | porter | Boulger house | Petrolia | |
| CORNELL | Isaac C | clerk | Main | Greece City | |
| COSFORD | John H | clerk | Main | Millerstown | |
| COUGHLIN | Jerry | oil operator | boards European hotel | Millerstown | |
| COULTER | A | blacksmith | Modoc | ||
| COULTER | Cyrus | tinner | New Castle | Centreville | |
| COULTER | G W, Sr | Main | Centreville | ||
| COULTER | Isaac | contractor | Main | Centreville | |
| COULTER | L S | Main | Centreville | ||
| COULTER | William | laborer | Main | Centreville | |
| COULTER | C W | druggist | boards north Main | Butler | |
| COVERT | -------- | widow | Main | Harmony | |
| COVERT | B F | carpenter | German | Harmony | |
| COVERT | Caleb | Portersville | |||
| COVERT | Francis | justice of the peace | Main | Harmony | |
| COVERT | Hezekiah | Main | Harmony | ||
| COVERT | Joseph S | Main | Harmony | ||
| COVERT | Leeland | Main | Harmony | ||
| COWAN | Thomas | Harrisville | |||
| COWAN | W G | of Cowan & Templeton | boards Grand Central | Karns City | |
| COWAN & TEMPLETON | lumber dealers | Railroad | Karns City | ||
| COWDEN | -------- | physician | Main | Greece City | |
| COWDEN | Dr. W R | Portersville | |||
| COX | H | Harrisville | |||
| COYLE | James | Mill | Millerstown | ||
| CRAIG | A | clerk | Kittanning | Millerstown | |
| CRAIG | A L | book-keeper J H Van Wormer | res. Millerstown | Karns City | |
| CRAIG | J S | druggist | Main | Greece City | |
| CRAM | R W | postmaster and news depot | Main | Petrolia | |
| CRAMER | Philip | porter | Reiber house | Millerstown | |
| CRANMER | A | ||||
| CRATLY | E J | widow | Race | Butler | |
| CRATZER | H W | teamster | near Central ave | Millerstown | |
| CRILLY | N J | photographer | west Jefferson | Butler | |
| CRISWELL | A P | proprietor Grand Central Hotel | Karns City | ||
| CRISWELL | J E | dry goods, &c | Main | Karns City | |
| CRITCHLOW | Thomas | merchant | Butler | Prospect | |
| CRONIN | J | of Cronin & Wilson | boards Weaver house | Millerstown | |
| CRONIN & WILSON | boiler works | Main | Millerstown | ||
| CROOKER | E S | tank and rig builder | Slippery Rock | Millerstown | |
| CROOKER | E S | lumber yard and rig builder | Union | Petrolia | |
| CROSBY | P B | oil broker | Main | Petrolia | |
| CROSS | G J | of CROSS & McOMBER | Lowry House | Butler | |
| CROSS & McOMBER | proprietors Lowry house | corner Main and Jefferson | Butler | ||
| CROSSMAN | E | attorney at law | Main | Millerstown | residence Central ave |
| CROUCH | R M | Harrisville | |||
| CROUP | Cyrus | carpenter | Springdale | Butler | |
| CROUP | Pressley | carpenter | west Jefferson | Butler | |
| CROUSE | Charles | moulder | Washington | Butler | |
| CROUSE | miner | Springdale | Butler | ||
| CROWEL | Philip | Harrisville | |||
| CROWELL | John | Harrisville | |||
| CROWLEY | John | hostler | boards Main | Petrolia | |
| CRUGH | Charles | Main | Greece City | ||
| CRUMPY | William | Main | Greece City | ||
| CUBBINS | J | coal dealer | Modoc | ||
| CUBBISON | A M | Portersville | |||
| CUBBISON | Henry S | Harrisville | |||
| CUBBISON | James N | Harrisville | |||
| CUFF | James | barber | Fairview | Petrolia | |
| CUKISS | F W | oil operator | boards Reiber house | Millerstown | |
| CULLEN | Patrick | carpenter | boards Monitor house | Petrolia | |
| CUMMINGS | Joseph | laborer | boards Adams house | Fairview | |
| CUMMINS | I I | Harrisville | |||
| CUMMINS | L R | Harrisville | |||
| CUNAN | William | wagon maker | Main | Centreville | |
| CUNNINGHAM | Dr | Main | Zelienople | ||
| CUNNINGHAM | J H | of Cunningham & Marshall | boards Coleman's European hotel | Millerstown | |
| CUNNINGHAM & MARSHALL | attorneys | Main | Millerstown | ||
| CUNY | John J | Harrisville | |||
| CUPPS | David | county treasurer | res. Ziegler ave., Springdale | Butler | |
| CURRAN | William | bakery | Slippery Rock | Millerstown | |
| CURRIER | Peter | dry goods, groceries, &c | Main | Petrolia | |
| CUTHBERT | Augustus | machine shop | Etna Springdale | Butler | |
| CUTHBERT | John | machinist | Etna Springdale | Butler | |
| CUTHBERT | Newton | machinist | Etna Springdale | Butler | |
| CYPHER | George A | of BERG & CYPHER | Main | Butler |