Photographs
- MEWI 4 Letter : McRae, John J.- p.286 Dept. of Interior #1 1850/05/28
- MEWI 4 Letter : McSuse, John- p.165 Dept. of Interior #1 1849/11/17
- MEWI 4 Letter : McVey, J.T.- p.146 Dept. of Interior #1 1849/10/15
- MEWI 4 Letter : Meacham, J., Professor- p.135 Dept. of Interior #1 1849/09/27
- MEWI 4 Letter : Meacham, J., Professor- p.275 Dept. of Interior #1 1850/05/07
- MEWI 4 Letter : Medill, William- p.14 Dept. of Interior #1 1849/05/31
- MEWI 2 Letter : Meline, James F. 1842/12/09
- MEWI 2 Letter : Merchants' Bank 1833/09/02
- MEWI 4 Letter : Meridith, William- p.50 Dept. of Interior #1 1849/05/12
- MEWI 4 Letter : Merritt, William Hamilton- p.38 Dept. of Interior #1 1849/06/26
- MEWI 1 Letter : Miller, J.R. 1827/12/20
- MEWI 4 Letter : Miller, J.W.- p.229 Dept. of Interior #1 1850/03/18
- MEWI 4 Letter : Miller, J.W.- p.74 Dept. of Interior #1 1849/04/10
- MEWI 4 Letter : Miller, William H.- p.157 Dept. of Interior #1 1849/11/03
- MEWI 4 Letter : Mills, John- p.131 Dept. of Interior #1 1849/09/11
- MEWI 4 Letter : Millson, John S.- p.275 Dept. of Interior #1 1850/05/08
- MEWI 4 Letter : Miner, William- p.161 Dept. of Interior #1 1849/11/09
- MEWI 4 Letter : Mitchell, L.E.- p.127 Dept. of Interior #1 1849/09/06
- MEWI 2 Letter : Moore, E.H. (to C.R. Smith and Henry Brown) 1872/04/15
- MEWI 2 Letter : Moore, E.H. (to P.B. Ewing) 1866/09/20
- MEWI 1 Letter : Moore, Sidney 1829/03/19
- MEWI 1 Letter : Moore, Sidney 1829/05/05
- MEWI 4 Letter : Moore, William F.- p.56 Dept. of Interior #1 1849/07/09
- MEWI 2 Letter : Moore, Wilstach, and Baldwin 1867/05/31
- MEWI 4 Letter : Moorehead, J.T.- p.79 Dept. of Interior #1 1849/06/19
- MEWI 4 Letter : Morehead, C.S.- p.180 Dept. of Interior #1 1850/01/09
- MEWI 4 Letter : Morehead, C.S.- p.227 Dept. of Interior #1 1850/03/16
- MEWI 4 Letter : Morgan, George H.- p.155 Dept. of Interior #1 1849/10/31
- MEWI 4 Letter : Morton, Jeremiah- p.231 Dept. of Interior #1 1850/03/20
- MEWI 4 Letter : Morton, Jeremiah- p.249 Dept. of Interior #1 1850/04/04
- MEWI 4 Letter : Morton, Jeremiah- p.262 Dept. of Interior #1 1850/04/20
- MEWI 4 Letter : Morton, Jeremiah- p.295 Dept. of Interior #1 1850/06/10
- MEWI 4 Letter : Morton, Jeremiah- p.56 Dept. of Interior #1 1849/07/09
- MEWI 4 Letter : Mosely, Thomas W.H.- p.114 Dept. of Interior #1 1849/08/27
- MEWI 4 Letter : Moss, Theodore F.- p.279 Dept. of Interior #1 1850/05/16
- MEWI 4 Letter : Mozencraft, O.M.- p.208 Dept. of Interior #1 1850/02/20
- MEWI 4 Letter : Mozencraft, O.M.- p.277 Dept. of Interior #1 1850/05/15
- MEWI 4 Letter : Mozencraft, O.M.- p.310 Dept. of Interior #1 1850/07/05
- MEWI 4 Letter : Mudd, Ignatius- p.47 Dept. of Interior #1 1849/05/12
- MEWI 4 Letter : Mudd, Ignatius- p.62 Dept. of Interior #1 1849/04/13
- MEWI 4 Letter : Mudd, Ignatius- p.88 Dept. of Interior #1 1849/08/01
- MEWI 4 Letter : Munsell and White- p.96 Dept. of Interior #1 1849/08/13
- MEWI 4 Letter : Munson, M.M.- p.193 Dept. of Interior #1 1850/02/02
- MEWI 4 Letter : Murdock, Francis B.- p.214 Dept. of Interior #1 1850/02/28
- MEWI 4 Letter : Murdock, Francis B.- p.244 Dept. of Interior #1 1850/04/01
- MEWI 4 Letter : Murdock, Francis B.- p.43 Dept. of Interior #1 1850/07/05
- MEWI 1 Letter : Murphy, W.T. 1827/06/14
- MEWI 1 Letter : Murphy, W.T. 1827/06/25
- MEWI 1 Letter : Murphy, W.T. 1829/05/25
- MEWI 4 Letter : Mussey, G. St. Clair- p.101 Dept. of Interior #1 1849/08/15
- MEWI 4 Letter : Myers, George- p.98 Dept. of Interior #1 1849/07/03
- MEWI 4 Letter : Myers, P.J.- p.207 Dept. of Interior #1 1850/02/19
- MEWI 4 Letter : Naefrild, H.- p.265 Dept. of Interior #1 1850/04/23
- MEWI 4 Letter : Near, John L.- p.121 Dept. of Interior #1 1849/08/31
- MEWI 4 Letter : Neeland, Thomas F.- p.203 Dept. of Interior #1 1850/02/14
- MEWI 4 Letter : Nelson, Samuel- p.176 Dept. of Interior #1 1849/12/26
- MEWI 4 Letter : Nelson, Samuel- p.205 Dept. of Interior #1 1850/02/15
- MEWI 4 Letter : Nelson, W.- p.223 Dept. of Interior #1 1850/03/11
- MEWI 4 Letter : Nes, Henry- p.178 Dept. of Interior #1 1849/12/27
- MEWI 1 Letter : New Jersey Society for the Promotion of Manufactures and the Mechanic Arts 1827/12/10
- MEWI 2 Letter : Newman, Alexander (to A. Rutherford, enclosed in 1849/12/12, Hoge to T.E.) 1839/06/17
- MEWI 4 Letter : Newton, Thomas W.- p.151 Dept. of Interior #1 1849/10/22
- MEWI 4 Letter : Newton, Thomas W.- p.64 Dept. of Interior #1 1849/07/19
- MEWI 2 Letter : Niles, N. 1849/10/26
- MEWI 4 Letter : Niles, William O.- p.133 Dept. of Interior #1 1849/09/20
- MEWI 4 Letter : Noland, C.F.M.- p.150 Dept. of Interior #1 1849/10/17
- MEWI 4 Letter : Noland, C.F.M.- p.201 Dept. of Interior #1 1850/02/11
- MEWI 4 Letter : Noland, C.F.M.- p.237 Dept. of Interior #1 1850/03/25
- MEWI 1 Letter : Nye, Arius 1829/09/02
- MEWI 1 Letter : Nye, Arius 1829/10/18
- MEWI 4 Letter : Oberton, Thomas B.- p.287 Dept. of Interior #1 1850/05/29
- MEWI 4 Letter : Oberton, Thomas B.- p.297 Dept. of Interior #1 1850/06/11
- MEWI 4 Letter : Oberton, Thomas B.- p.299 Dept. of Interior #1 1850/06/12
- MEWI 4 Letter : O'Brien, Thomas- p.293 Dept. of Interior #1 1850/06/03
- MEWI 4 Letter : Odlin, George O. and Co.- p.285 Dept. of Interior #1 1850/05/27
- MEWI 4 Letter : Ogden, Octavius N.- p.25 Dept. of Interior #1 1849/06/11
- MEWI 2 Letter : Oldroyd, O.H. 1870/05/16
- MEWI 1 Letter : Olds, Joseph 1829/09/04
- MEWI 4 Letter : Olmstead, P.U.- p.42 Dept. of Interior #1 1849/07/03
- MEWI 2 Letter : Olmsted, Edward 1868/10/12
- MEWI 1 Letter : Orput, James B. 1829/03/06
- MEWI 1 Letter : Osborne, Williams, and Co. 1827/10/15
- MEWI 4 Letter : Owen, Allen F.- p.202 Dept. of Interior #1 1850/02/13
- MEWI 4 Letter : Owsley, William- p.228 Dept. of Interior #1 1850/03/18
- MEWI 4 Letter : Paddock, William H.- p.226 Dept. of Interior #1 1850/03/12
- MEWI 4 Letter : Page, Henry F.- p.213 Dept. of Interior #1 1850/02/27
- MEWI 4 Letter : Palmer, Daniel- p.250 Dept. of Interior #1 1850/04/06
- MEWI 4 Letter : Parish, Edward- p.165 Dept. of Interior #1 1849/11/14
- MEWI 1 Letter : Parker, Charles (note to 1848/05/15, Lawrence to T.E.) Abbott
- MEWI 1 Letter : Parker, J. 1829/08/21
- MEWI 4 Letter : Parsons, S.- p.22 Dept. of Interior #1 1849/06/08
- MEWI 4 Letter : Passio, R.T.- p.249 Dept. of Interior #1 1850/04/03
- MEWI 4 Letter : Patrick, S.- p.202 Dept. of Interior #1 1850/02/13
- MEWI 4 Letter : Patterson, James H.- p.156 Dept. of Interior #1 1849/11/02
- MEWI 4 Letter : Patterson, R.M., Dr.- p.222 Dept. of Interior #1 1850/03/11
- MEWI 4 Letter : Patton, William- p.98 Dept. of Interior #1 1849/08/15
- MEWI 4 Letter : Pearce, Arthur- p.195 Dept. of Interior #1 1850/02/05
- MEWI 4 Letter : Pearce, Arthur- p.274 Dept. of Interior #1 1850/05/07
- MEWI 1 Letter : Pease, Calvin 1829/09/05
- MEWI 4 Letter : Peck, Joseph- p.138 Dept. of Interior #1 1849/10/03