- Moffett, John R.1
- Moore, James W., d. 18641
- Mottelay, Paul F.1
- Mrs. Harleston1
- Mt. Pleasant and Sullivan's Island Ferry Company County (S.C.)1
- Mydans (photographer, Farm Security Administration)1
- Mydans, Carl (photographer, Farm Security Administration)1
- Nagel and Mr. Dempster1
- Nance, Fredk. A.1
- Nelson, Lewis A.1
- Nelson, Sam'l A.1
- Nevin, M.1
- New-England Society1
- Newmann, Edmond1
- Northrop, S.C. (Distrbutor)1
- O'Donnell, Alexander V.1
- Orcutt, L., 1830-1
- Osborn & Durbec (Photographer)1
- Osborn's Gallery1
- Pach Bros.1