| LACKEY | William E | blacksmith | boards Slippery Rock | Millerstown | |
| LACOCK | Hamilton | laborer | west Cunningham | Butler | |
| LACOCK | Mary | widow | west Cunningham | Butler | |
| LACY | M A | clerk | Jamison | Petrolia | |
| LADERER | -------- | dry goods, groceries, &c. | Main | Middle Lancaster | |
| LAMBER | Mary | Portersville | |||
| LAMBER | Paul | Portersville | |||
| LANDERS | George B | butcher | Main | Petrolia | |
| LANDERS | John | butcher | Main | Petrolia | |
| LANDERS | Joseph | butcher | Main | Petrolia | |
| LANE | James | driller | boards Grand Central | Karns City | |
| LANE | Samuel | oil buyer | boards Lowry house | Butler | |
| LANG | John | Saxonburg | |||
| LANGBEIN | George | blacksmith | Lincoln | Butler | |
| LANGWORTHY | L A | manager W U telegraph office | boards Central house | Millerstown | |
| LARDIN | WILLIAM M | of Nesbitt & Lardin | near Railroad | Petrolia | |
| LARDNER | Linford | clerk | Main | Millerstown | |
| LATSHAW | Isaac | machinist | Main | Harmony | |
| LAUBIE | Francis | Saxonburg | |||
| LAUK | Jacob | moulder | west Cunningham | Butler | |
| LAUX | Louis E | barber | corner Main and Washington | Fairview | |
| LAWRENCE | Everett | printer | boards Wayne | Butler | |
| LAWSON | Frank | barber | Fairview | Petrolia | |
| LAZENBY | James | dry goods, groceries, &c. | Jamison | Petrolia | |
| Le FEVRE | Robert | teamster | High | Zelienople | |
| LEASON | Samuel | Harrisville | |||
| LEASURE | Charles | porter | Central house | Petrolia | |
| LEE | David | laborer | Washington | Butler | |
| LEE | Fred E | clerk | residence Cherry Hill | Butler | |
| LEE | James | works Pipe Line | boards Grand Central | Karns City | |
| LEE | John | machinist | Fairview | Karns City | |
| LEE | Mrs J J | milliner | Main | Millerstown | |
| LEEDHAM | Theodore | teamster | Springdale | Butler | |
| LEFEVRE | J H | attorney | boards Jack's hotel | Butler | |
| LEFEVRE | J M | Groceries, Provisions, Cigars, Tobacco &e | north Main | Butler | residence McKean |
| LEFEVRE | John | blacksmith | Washington | Butler | |
| LEFFINGWELL | Charles | Main | Greece City | ||
| LEFLEY | W D | clerk | near Argyle | Petrolia | |
| LEIBLER | Joseph | clerk | Reiber house | Millerstown | |
| LEIBLER | Martin | blacksmith | Springdale | Butler | |
| LEIDHOLD | G | hotel keeper | Railroad | Delano | |
| LEIGHTNER | John | Jackson | Prospect | ||
| LEMMON | W | miner | Springdale | Butler | |
| LENDERS | I M | hardware, &c. | Main | Millerstown | |
| LENEHAN | J C | proprietor Valley House | Main | Petrolia | |
| LENNOX | M W | telegraph operator | boards Grand Central | Karns City | |
| LEO | B | oil operator | boards Boulger house | Petrolia | |
| LEOPOLD | Christian | saloon | Main | Millerstown | |
| LEOPOLD | Henry | Saxonburg | |||
| LEOPOLD | J F | works Union Pipe Line | boards Weaver house | Millerstown | |
| LEOPOLD | John | repairman U P Co | Millerstown | ||
| LEPLEY | Benjamin | dentist | New Castle | Prospect | |
| LERCH | D W | job printing office | Jamison | Petrolia | boards Forest house |
| LESLIE | James | oil operator | boards Grand Central | Karns City | |
| LEVI | A | dry goods | Main | Millerstown | |
| LEVI | D | clothing | Main | Karns City | |
| LEVI | H | merchant tailor | Main | Karns City | boards Grand Central |
| LEVI | Harris | clerk | Main | Karns City | |
| LEVINE | M | clerk | boards Forest house | Petrolia | |
| LEVIS | I N | Main | Zelienople | ||
| LEVIS | John | Main | Zelienople | ||
| LEVIS | L J | law student | Springdale | Butler | |
| LEVIS | Robert S | merchant | Main | Zelienople | |
| LEVISON | Edward | clothes renovator | Main | Butler | |
| LEWIS | A W | confectionery, cigars and tobacco | Euclid ave | Karns City | |
| LEWIS | J | boards Adams house | Fairview | ||
| LEWIS | V | works Pipe Line | boards Grand Central | Karns City | |
| LEWIS | Vallie | pumper | boards Bateman's hotel | Karns City | |
| LIMBERG | Rev C A | pastor German Reformed Church | Millerstown road | Butler | |
| LINCOLN | C | Main | Greece City | ||
| LINDBOHM | G E | merchant tailor | Jamison | Petrolia | |
| LINDSEY | J A | clerk | Central house | Petrolia | |
| LINKNER | Lewis | Saxonburg | |||
| LINN | Charles | Saxonburg | |||
| LINN | H C | ||||
| LINN | L G | of GOUCHER & LYNN | Main | Butler | |
| LINTNER | C J | restaurant | Main | Karns City | |
| LIST | J M | physician | Evansburg | ||
| LITTLE | Harry | hostler | boards Eitenmuller house | Butler | |
| LITTLE | Martha | Main | Centreville | ||
| LITTLE | R R | hostler | boards Eitenmuller house | Butler | |
| LIVINGSTONE | Milton | Main | Greece City | ||
| LIZE | A | drug clerk | head Main | Millerstown | |
| LOCKE | H W | of Price & Locke | Union | Petrolia | |
| LOCKE | J H | machinist | boards Union | Petrolia | |
| LOCKE | M S | machinist | boards Main | Petrolia | |
| LOCKHART | HENRY | manager European Hotel | Main | Millerstown | |
| LOCKHART | Mark | Portersville | |||
| LOCKWOOD | L G | clerk | Slippery Rock | Millerstown | |
| LOGAN | J P | Main | Centreville | ||
| LOGAN | John | Main | Centreville | ||
| LOGAN | Stephen | carpenter | boards Monitor house | Petrolia | |
| LOGUE | Cling | clerk | Slippery Rock | Millerstown | |
| LOGUE | Patrick | laborer | Main | Karns City | |
| LONG | fish business | Main | Millerstown | ||
| LONG | Eva | Harrisville | |||
| LONG | W J | fish market | Fairview | Petrolia | |
| LONGABAUGH | S S | restaurant and billiard room | Main | Fairview | |
| LONGBEIN | Gottlieb | blacksmith | North | Butler | |
| LONGHOUSE | Herman | Main | Zelienople | ||
| LOOMIS | H P | superintendent for B B Campbell | boards Forest house | Petrolia | |
| LOTSMAN | Richard | painter | Kittanning | Millerstown | |
| LOTZ & KOHNADLE | carpenters | Evansburg | |||
| LOUDER | Charles | pumper | boards Adams house | Fairview | |
| LOVELL | George | agent Green Line | McKean | Butler | |
| LOVELL | George | law student | McKean | Butler | |
| LOVELL | William | north McKean | Butler | ||
| LOW | Abraham | Harrisville | |||
| LOWE | Jacob | blacksmith | cor, Washington & Cunningham | Butler | |
| LOWE | John | carriage maker | cor. Washington & Cunningham | Butler | |
| LOWE | John, Jr | laborer | cor. Washington & Cunningham | Butler | |
| LOWMAN | Maben A | printer | boards North | Butler | |
| LOWMAN | T J | widow | North | Butler | |
| LOWRY | Alexander | corner Bluff and Pearl | Butler | ||
| LOWRY | George | shoemaker | north McKean | Butler | |
| LOWRY | J F | of McBRIDE & LOWERY | corner Pearl and Bluff | Butler | |
| LOWRY | P W | attorney | Main | Butler | boards Pearl |
| LOWRY | William A | insurance agent | corner Bluff and Pearl | Butler | |
| LOWRY HOUSE | corner Main and Jefferson | Butler | |||
| LUCE | W | confectionery | Railroad | Petrolia | |
| LUCE | W G | oil business | Main | Butler | |
| LUDWIG | J B | barber | Forest | Petrolia | |
| LUEBBEN | H | shoemaker | Main | Middle Lancaster | |
| LUEBBEN | W H | wheelwright | Main | Middle Lancaster | |
| LUEBKERT | Rev W C H | pastor German Evangelical Lutheran Church | East Wayne | Butler | |
| LUNG | Pon | laundryman | Railroad | Petrolia | |
| LUPHER | C A | millinery store | Slippery Rock | Millerstown | |
| LUPHER | J D | hardware and oil well supplies | Main | Fairview | |
| LUPHER | J D | hardware and oil well supplies | Railroad | Karns City | |
| LUPHER | P W | clerk | Slippery Rock | Millerstown | |
| LUSK | Amos | physician | West alley | Zelienople | |
| LUSK | Joseph | physician | Main | Harmony | |
| LUSK | Loring | physician | Main | Zelienople | |
| LUSK | William | Main | Zelienople | ||
| LUSK | William H | student at law | boards McKean | Butler | |
| LUTHER | George H | machinist and tool fisher | residence Petrolia | Karns City | |
| LUTHER | J H | machine shop and oil well supplies | Railroad | Karns City | residence Petrolia |
| LUTTON | -------- | widow | Portersville | ||
| LYNCH | Daniel | tailor | boards Eitenmuller house | Butler | |
| LYON | Charles | night watch | Central hotel | Millerstown | |
| LYON | W W | book-keeper | Mill | Millerstown | |
| LYONS | Frank | clerk | boards Argyle | Petrolia | |
| LYONS | J C | boiler maker | Railroad | Petrolia | |
| LYTLE | Joseph | clerk | boards north Main | Butler | |
| LYTLE | R W | moulder | Springdale | Butler | |
| LYTLE | Robert | teamster | Springdale | Butler |