10 Nov
2016
10 Nov
'16
4:32 p.m.
Silver-Glass Reflecting Telescopes, by George Calver 53494 [Full title: New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S.] [Subtitle: with Directions for Silvering, Adjusting, &c.] [Link: http://www.gutenberg.org/5/3/4/9/53494 ] [Files: 53494-0.txt; 53494-h.htm] Thanks to Eric Hutton and the Online Distributed Proofreading Team at http://www.pgdp.net David