| TABER | C | of Thompson & Taber | Main | Karns City | |
| TADDER | George T | Main | Greece City | ||
| TADDER | William | Main | Greece City | ||
| TAGGERT | J D | Main | Centreville | ||
| TAGGERT | John | Main | Centreville | ||
| TANNEHILL | William M | harness maker | Main | Centreville | |
| TASH | C | boards Main | Millerstown | ||
| TATE | Alfred | Harrisville | |||
| TAYLOR | E A | book-keeper Argyle Savings Bank | Main | Petrolia | |
| TAYLOR | E G | teller Argyle Savings Bank | Main | Petrolia | |
| TAYLOR | Harvey | Main | Centreville | ||
| TAYLOR | J B | carpenter | boards Boulger house | Petrolia | |
| TAYLOR | J C | shoemaker | east Jefferson | Butler | |
| TAYLOR | Jacob | carpenter | Water | Millerstown | |
| TAYLOR | Ross | carpenter | boards Eastern house | Petrolia | |
| TAYLOR | Samuel | Harrisville | |||
| TAYLOR | T B | clerk | boards Boulger house | Petrolia | |
| TAYLOR | William | carpenter | boards Water | Millerstown | |
| TAYLOR H L & CO | Hardware and Oil Well Supplies | Main | Millerstown | ||
| TAYLOR H L & CO | producers | office Slippery Rock | Millerstown | ||
| TAYLOR H L & CO | oil producers | office Jamison | Petrolia | ||
| TEBAY | James C | Portersville | |||
| TEBAY | James H | prothonotary | Springdale | Butler | |
| TEBAY | Joseph | Portersville | |||
| TEETS | Albert | laborer | Butler | Prospect | |
| TEMPLE | C P | ||||
| TEMPLE | James | tailor | boards Jamison | Petrolia | |
| TEMPLETON | C | of Templeton & Wannamaker | Jamison | Petrolia | |
| TEMPLETON | P A | lumber dealer | corner Railroad and Union | Petrolia | |
| TEMPLETON & WANNAMAKER | Drugs, Medicines, Toilet Articles, &c | Jamison | Petrolia | ||
| TESKE | E | barber | Main | Petrolia | |
| THAYER | Perry | Main | Greece City | ||
| THOMAS | David | sewing machine agent | east Penn | Butler | |
| THOMAS | Horatio | superintendent construction Penna. Trans. Co. | Argyle | Petrolia | |
| THOMAS | Joseph | machinist | near Petrolia | Karns City | |
| THOMPSON | C R | hostler | boards Main | Karns City | |
| THOMPSON | Isaiah | Main | Greece City | ||
| THOMPSON | J M | physician | boards Finley house | Butler | |
| THOMPSON | J W | Main | Greece City | ||
| THOMPSON | Jeremiah | ||||
| THOMPSON | Moses | ||||
| THOMPSON | Rev | Millerstown road | Butler | ||
| THOMPSON | Robert | Main | Greece City | ||
| THOMPSON | Robert | plasterer | New Castle | Prospect | |
| THOMPSON | Robert | boiler maker | boards White house | Petrolia | |
| THOMPSON | Thomas C | ||||
| THOMPSON | Thomas H | ||||
| THOMPSON | W J | ||||
| THOMPSON | John M | of THOMAS & SCOTT, & pres Butler Savings Bank | residence Main | Butler | |
| THOMPSON & SCOTT | attorneys | north Main | Butler | ||
| THOMPSON & TABER | producers | Main | Karns City | ||
| THORN | Peter | wagon maker | Brady | Buena Vista | |
| THORN | W W | engineer | Washington | Fairview | |
| THORN | William | wagon maker | residence Fairview | Petrolia | |
| THORNTON | A | borough clerk | Main | Millerstown | boards European hotel |
| TIBBLES | G W | gauger | boards Eastern house | Petrolia | |
| TIFFANY | O E | manager W U telegraph office | Main | Fairview | |
| TIMBLIN | Alonzo | ||||
| TIMBLIN | Amos | ||||
| TIMBLIN | Henry L | ||||
| TIMBLIN | Monroe | ||||
| TIMBLIN | Perry | ||||
| TIMBLIN | Sarah | widow | north Main | Butler | |
| TIMBLIN | Susanna | ||||
| TIMBLIN | W H | ||||
| TIMMENY | Jos F | attorney | Jeff. near Main, bds Finley house | Butler | |
| TITUS | Benj | hostler | Kittanning | Millerstown | |
| TITUS | Myers | machinist | boards Main | Petrolia | |
| TITUS | Smith | pumper | boards Main | Karns City | |
| TITUS | William | teamster | Kittanning | Millerstown | |
| TITZEL | J R | teacher | Main | Zelienople | |
| TODD | W B | of Remer & Todd | Railroad | Petrolia | |
| TOLLY | F H | Saxonburg | |||
| TOMLINSON | T H | book-keeper Butler County Bank | Central ave | Millerstown | |
| TOWLER | S S | physician | Main | Millerstown | residence Green |
| TRACY | James | carpenter | Washington | Butler | |
| TRACY | S A | proprietor Central House | Modoc | ||
| TRAVERS | Peter | of Scott & Travers | Main | Karns City | |
| TRAVIS | A B | physician and druggist | Springdale | Butler | |
| TREISCH | George | tanner | Bluff | Butler | |
| TRIPP | John | livery | Fairview | Petrolia | boards Central house |
| TROUP | Gottlieb | shoemaker | boards Main | Karns City | |
| TROUTMAN | A | dry goods, groceries, &e | cor. Main and Mifflin | Butler | |
| TROUTMAN | J H | clerk | corner Main and Mifflin | Butler | |
| TROUTMAN | P | dry goods, groceries, &c. | Butler | Buena Vista | |
| TRUE | Jacob | engineer U P Co | Millerstown | ||
| TRUMBOWER | H | driller | boards Grand Central | Karns City | |
| TRUMBOWER | Henry | driller | boards European hotel | Millerstown | |
| TRUXAL | William | tailor | North | Butler | |
| TRUXALL | Felix | carriage maker | west Jefferson | Butler | |
| TUPPER | Benjamin | oil dealer | boards Oil Exchange | Petrolia | |
| TURNER | W P | livery stable | Main | Millerstown | |
| TURNER | William | Main | Greece City | ||
| TYLER | Mrs. E E | millinery | Euclid ave | Karns City |