| Laurelton Lumber Co. No. 155, later No. 2, Laurel Park, PA |
155 |
| Laurelton Lumber Co. No. 3, Laurel Park, PA |
201 |
| Laurelton Lumber Co. No. 4, Laurelton, PA |
X67 |
| Lazelere Machine Co. (D), Williamsport, PA |
X307 |
| Lewis Run Manufacturing Co. No. 1, Lewis Run, PA |
X149 |
| Lewis Run Manufacturing Co. No. 4, Lewis Run, PA |
X230 |
| Lewisburg & Buffalo Valley Railroad No. 160, later No. 1, Lewisburg, PA |
160 |
| Lewisburg & Buffalo Valley Railroad No. 2, Lewisburg, PA |
166 |
| Lewisburg & Buffalo Valley Railroad No. 3, Lewisburg, PA |
154 |
| Lewisburg & Buffalo Valley Railroad No. 5, Lewisburg, PA |
X25 |
| Lewisburg & Buffalo Valley Railroad No. 7, Lewisburg, PA |
194 |
| Lewisburg & Buffalo Valley Railroad No. 8, Lewisburg, PA |
279 |
| Linden Hall Lumber Co. No. 1, Linden Hall, PA |
X50 |
| Linden Hall Lumber Co. No. 2, Linden Hall, PA |
X31 |
| Linden Hall Lumber Co. No. 3, Linden Hall, PA |
X533 |
| Linden Hall Lumber Co., Linden Hall, PA |
X23 |
| Low, E. S. - (D), Pittsburgh, PA |
X214 |
| Low, E. S. - (D), Pittsburgh, PA |
X213 |
| Lycoming Timber & Lumber Co. No. 254, Eddy Lick, PA |
254 |
| Lycoming Timber & Lumber Co. No. 81, Eddy Lick, PA |
81 |
| Markleton Lumber Co. No. 196, Markleton, PA |
196 |
| Mayburg Chemical Co. No. 1, Mayburg, PA |
1654 |
| Mayburg Chemical Co. No. 101, Mayburg, PA |
101 |
| Mayburg Chemical Co., Mayburg, PA |
842 |
| McCabe Lumber Co. No. 1, West Hickory, PA |
X225 |
| McChesney, Elk County, PA |
X535 |
| McFarland & Bollinger No. 1, Huston Siding, PA |
X73 |
| McFarland Lumber Co. No. 1, Bigam (Laurel Furnace), PA |
X74 |
| McFarland Lumber Co. No. 1, Indian Creek, PA |
X74 |
| McFarland Lumber Co. No. 2, Bigham, PA |
808 |
| McKean Chemical Co. No. 2, Dahoga, PA |
X82 |
| McKelvey Brothers, Reese, PA |
X256 |
| McMichael, B. F. - No. 1, Vandergrift Corners, PA |
492 |
| McMichael, B. F. - No. 2, Vandergrift Corners, PA |
X542 |
| McMichael, B. F. - No. 3, Vandergrift Corners, PA |
X541 |
| McNeal, M. E. - No. 3, Central City, PA |
1587 |
| McNeal, M. E. - No. 3, Ore Hill, PA |
1587 |
| McNeal, M. E. - No. 4, Central City, PA |
1687 |
| McNeal, M. E., Central City, PA |
X539 |
| McNeal, M. E., Ore Hill, PA |
X256 |
| McNeal, M. E., Ore Hill, PA |
X123 |
| McNitt Brothers & Co. No. 1, Hecla, PA |
X120 |
| McNitt-Huyett Lumber Co. No. 1, Snydertown, PA |
X120 |
| McNitt-Huyett Lumber Co. No. 2, Snydertown, PA |
X122 |
| McNitt-Huyett Lumber Co. No. 2, Waddle, PA |
X122 |
| McNitt-Huyett Lumber Co. No. 3, Waddle, PA |
X123 |
| Merrill, George B. - No. 329, Dents Run, PA |
329 |
| Miller, H. A., Torbet (Jersey Shore), PA |
X135 |
| Moore, J. B., Garland, PA |
X5 |
| Morrisdale Railway No. 2, Morrisdale, PA |
155 |
