Household manufactures in the United States, 1640-1860Tryon, Rolla M. · First published 1917Open the Tome
Taxonomic problems in the geography of North American fernsRolla M. Tryon · First published 1969Open the Tome
The teaching of history in junior and senior high schoolsTryon, Rolla M. · First published 1921Open the Tome
Materials, methods, and administration of history study in the elementary schools of the United StatesTryon, Rolla M. · First published 1912Open the Tome
