I believe this photo was at his retirement. With Mr. Gumbiner and Archie Anderson who took over the duty of overseeing stencil production. The lady behind is Virginia Bradley, librarian turned into coating engineer who joined us around 1974 so dating of this should be around that time.
Just as the above was to be uploaded I received a mail from Fred's grandson Mark saying he came across one of the Christmas photo Fred Gumbiner contributed a few month ago in which he found his grandfather. He also mentioned Fred had a patent granted while working for Polychrome. I was able to dig up his patent, the United State Patent No. 3681112 titled Thermographic Stencil Sheet; you can view/download actual patent from the patent office HERE. So this picture could be for the recognition of his getting this particular patent in 1972. This may explain why Virginia then librarian was there as she was the keeper of patent files and other documents. Fred's name is missing from Polychrome directory in 1979. As I recall he was still around several years after we moved to new headquarter building on Alexander Street around 1972 so his retirement could have been in 1978. Judging from Mark's note Fred passed away in early 80.