Index of mosses 1963-1989.
St Louis: Missouri Botanical Garden, 1992. Octavo, More
St Louis: Missouri Botanical Garden, 1992. Octavo, More
Cambridge MA: Harvard University Press, 1971. Octavo, text illustrations, very good copy in dustwrapper, inscription. More
Tucson: The University of Arizona Press, 1964. Quarto, twelve Field Sketches in Color by George Miksch Sutton and 51 colour photographs by Eliot Porter, very good copy in dustwrapper, signed by Monson for Len Robinson. More