Subject
- Men--Societies and clubs2
- Meredith, William M. (William Morris), 1799-18732
- Metallurgy18
- Metals--Refining43
- Mineral industries3
- Minerals--Analysis1
- Mines and mineral resources2
- Mint of the United States324
- Money2
- Montgomery, W. W.7
- Monuments1
- Morfit, Campbell, 1820-1897103
- Morris, Benjamin Wistar, 1819-19061
- Mortgages1
- Natural history--Societies, etc.3
- New Jersey Geological Survey1
- New Jersey--Atlantic City1
- New York Medical College1
- Newlyweds1
- Nickel6