Amateur telescope making / Albert G. Ingalls, editor ... With contributions by Russell W. Porter ... Prof. Charles S. Hastings ... [and others] ... With a forward by Dr. Harlow Shapley ...

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Amateur telescope making / Albert G. Ingalls, editor ... With contributions by Russell W. Porter ... Prof. Charles S. Hastings ... [and others] ... With a forward by Dr. Harlow Shapley ...

Reflecting telescopes.

Ingalls, Albert G. (Albert Graham)

Porter, Russell Williams, 1871-1949.