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Author
- Geological Survey (U.S.)8
- Geological Survey of Canada5
- Hackman, Robert J.5
- McQueen, Kathleen3
- Tolbert, G. E.3
- Marshall, C. H.2
- Minard, James P.2
- Olson, A. B.2
- Pomeroy, John S., 1929-2
- Bramkamp, Richard A.1
- Bunnag, D.1
- Cass, John T.1
- Coonrad, W. L.1
- Hayes, Philip Thayer, 1923-1
- Hemphill, William R. (William Ross), 1930-1
- Morris, Robert H.1
- Orkild, Paul P.1
- Radbruch-Hall, Dorothy H., 1920-1
