Drummond, Musci Amer.
Thomas Drummond

Academy of Natural Sciences of Drexel University
Catalog #: PH00110795
T. Drummond #s.n.
Gymnostomum heimii Hedw.
Canada, Rocky Mts.

Field Museum of Natural History
Catalog #: C1057483F
402671bf-4750-4b73-a250-ccdead1725d3
Thomas Drummond #s.n.
Hennediella heimii
, [precise locality unknown]