- Stephen Tilford of Cincinnati, OH, on his Blog, has the only picture I've seen, that may be taken in the Alvin Clark & Sons shop.
A picture of the Yerkes lens as it was ready to be installed. This was one month before Alvin G. Clark died.
(Click to enlarge)
The following is an account of a visit to Alvin Clark & Sons by W.W. Payne Written in "Popular Astronomy" Vol. XV - No. 7 (August and September 1907)
Clear Sky - Rich