There is some content in the library's UMB Archive online collection that references John C. Hemmeter. You can search his name on the UMB Archive site http://archive.hshsl.umaryland.edu/ to view the relevant content.
I would also recommend contacting the HS/HSL's historical librarian, Richard Behles. There may be additional information on John C. Hemmeter in the historical print collection that Rich oversees. You can get Rich's contact information or ask him a question via online form at our Historical Collections page: http://www.hshsl.umaryland.edu/resources/historical/.
|Monday - Friday||8 a.m. - 8 p.m.|
|Saturday - Sunday||10 a.m. - 4 p.m.|