Calkins, N. Am. Lich.
W. W. Calkins

Field Museum of Natural History
Catalog #: C0066997F
4f842fe5-8e23-41c4-8c82-7e811ab5dbdb
H. E. Hasse s.n. 00 November 1896
Dendrographa leucophaea Form leucophaea (Tuck.) Darb.
U.S.A., California, San Mateo, San Pedro; San Pedro, Beach Bluffs

Field Museum of Natural History
Catalog #: C0099010F
df55b73a-e6ac-4792-88a4-481d162cebbb
W. W. Calkins #1
Buellia mamillana (Tuck.) W. A. Weber
U.S.A., Tennessee, Hamilton, Mission Ridge

Field Museum of Natural History
Catalog #: C1010902F
24c3c3b7-e567-40fc-8f7b-7a456ca95404
W. W. Calkins #s.n.
Pyrenula pyrenuloides (Mont.) R. C. Harris
U.S.A., Florida