Creator
- Lefferts (Wilmington, Del.)1
- Lindsay, R. D.1
- Lipsher Specialty Co. (New Orleans, La.)1
- Long Photo.1
- Lord, R. A.1
- Louisiana News Co. (New Orleans, La.)1
- M Associates.1
- M W M (Aurora, Mo.)1
- MacFarlane, W. G.1
- Majestic Pub. Co.1
- Marken & Bielfeld, Inc. (Frederick, Md.)1
- Mason, C. B.1
- Mathews Art Service (N.Y.)1
- Mathews Post Card Service (N.Y.)1
- McClure, R. L.1
- Memphis Paper Co. (Memphis, Tenn.)1
- Meriden Gravure Company.1
- Millar, Doug.1
- Miller & Chadbourne (Fond du Lac, Wis.)1
- Miller, Sam.1