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Lathrop Report On Newspaper Indexes
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

PRISM
xx   OPTICS

Fabricate a thin prism (from glass plates and clear casting resin) which is placed in front of a finderscope and makes Polaris appear to lie exactly at the north celestial pole.
SKY & TELESCOPE Apr 1997 (v.93#4) pg. 86