Photographic Lenses and Korona Cameras, Catalog No. 25, Gundlach-Manhattan Optical Co., (Rochester, NY), dated January 1, 1925, ~6"x9", 52pp
This is a catalog apparently published at a time of change in two ways. One, an insert was found with both copies of this catalog observed that announces the Wide Angle Korona (which isn't in the catalog proper), so therefore the Wide Angle Korona was a new model for 1925. In one copy, it was loose, in the other, it was pasted over page 43. Two, in one of the copies, the Criterion View Camera is crossed out and marked "Discontinued". It is not known how long after the catalog was published this was done, however, so we can't exactly know from this when the Criterion was discontinued.
