Sketch map of Hay Fork gravel deposit : Trinity Co., Cal. / Original by R.C. Specht ; copy by L.J. Hohl. 1915.
Related Entities
There are 2 Entities related to this resource.
Hohl, L. J.
http://n2t.net/ark:/99166/w60w67wm (person)
Specht, R. C.
http://n2t.net/ark:/99166/w6k43pzf (person)