- Ladies of Trinity Methodist Church (Port Arthur, Ontario) (1)
- Ladies' Working Club of Congregational Church (Little Falls, Minn) (1)
- Lagrive, Jean de (Paris) (1)
- Laird & Lee (Chicago) (1)
- Lake County Abstract Co (Two Harbors, Minn), 1922 (1)
- Lakeland Chamber of Commerce? (Lakeland, Fla) (1)
- Land Office (Washington, D.C) (2)
- Land Office (Washington, D.C.?) (1)
- Land Office (Washington, D.C) (1)
- Langebartels & Jurgens (1)
- Langlume (1)
- Langwith Pub. Co (Minneapolis, Minn) (1)
- Langwith Publishing Co (Minneapolis, Minn) (1)
- Lapina (3)
- Lapina Imp. (1)
- Larkin Co. (Buffalo, N.Y.), 1909 (1)
- Latham Litho & Printing Co. (1)
- Latham Litho & Ptg Co. (5)
- Latham Litho & Ptg. Co. (3)
- Latham Litho Printing (1)
