- McGuire, Hunter, 1835-1900.1
- McRa, Duncan, 1863-1
- Miller, W. N.1
- Mineral County Historical Society (Keyser, W. Va.)1
- Monongah (W. Va.). Laws, statutes, etc.1
- Monongahela Power and Railway Company (Fairmont, W. Va.)1
- Monongahela Valley Trades and Labor Council (Fairmont, W. Va.)1
- Monongalia Agricultural Association (W. Va.)1
- Monongalia Building and Loan Association (Morgantown, W. Va.)1
- Morgan, Ephraim Franklin, 1869-1950.1
- Morgantown (W. Va.)1
- Morgantown (W. Va.). Board of Education.1
- Morgantown Board of Trade (Morgantown, W. Va.)1
- Morgantown Civic Club (Morgantown, W. Va.)1
- Morgantown Female Academy (Morgantown, W. Va.)1
- Morgantown Female Seminary (Morgantown, W. Va.)1
- Morningstar, Leslie E. 1
- Mountain State Business College (Parkersburg, W. Va.)1
- Mountain State Home Industries Cooperative Association (Clarksburg, W. Va.)1
- Mt. Pisgah Baptist Association (W. Va.)1
