Agreed with Garrett- no early US makers of RR's.... not until the 1880's I believe.... Dallmeyer and Steinheil patents probably the cause...
US lenses in the 1860's, other than Petzvals, which were wide angles of various degrees - would be Harrison's Globe and Orthoscope (late 50's); Fitz lens (rare), Schnitzer lens (rare), Zentmayer's lens, and then early 70's with various Morrison lenses...
I believe Usener made lenses under his own label, for Holmes, Booth and Haydens (HBH Label), and for Willard (Willard Label) over many years.
Dan
Bookmarks