Well, at least free download on the Internet is a problem, no doubt it's in a few
libraries.
Basically, if your search leads you to
https://archive.org/details/onconstruction00draprich/
you will find that while you can see a copy of Henry Draper's work there, the famous work On the Modern Reflecting Telescope and the Making and Testing
of Optical Mirrors by George W. Ritchey, supposed to be bound with it, is not there.
And, at least in Canada, while it may be on Google Books, it isn't there for full view.
But it turns out that this work _is_ present on the Internet Archive, albeit in
a less convenient form.
It was serialized in the Scientific American Supplement in December 1904 and January 1905:
https://archive.org/details/sim_scientific-american-supplement_1904-12-24_58_1512/
https://archive.org/details/sim_scientific-american-supplement_1904-12-31_58_1513/
https://archive.org/details/sim_scientific-american-supplement_1905-01-07_59_1514/
https://archive.org/details/sim_scientific-american-supplement_1905-01-14_59_1515/
https://archive.org/details/sim_scientific-american-supplement_1905-01-21_59_1516/
John Savard https://archive.org/details/sim_scientific-american-supplement_1905-01-28_59_1517/
you just need to run the downloaded .pdf through a laser printer for a hard copy.
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