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Plane Trigonometry by Crenshaw and Derr 1920s

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This is the sort of text book you had when you went to grade school in 1923. (Just kidding, it is definitely high school, if not university.) It's just chock full of diagrams and formulae with charts for tangents and cotangents at the back. If you want to know how your computer thinks, this is the book for you because it has all this information in its database. Can you imagine the idea of schools back then expecting students to actually calculate these things mentally?

The boards are green covered cloth and are bumped and stained as a well-used textbook should be. There is a copperplate handwritten owner's name in the front. There is some foxing on the front end pages only. The rest of the pages are clear and crisp. The binding is solid and tight. It was published in 1923 by the Athenaeum Press, Boston, Mass.. It is approximately 7 1/2" by 5" in size and has 157 pages to its bulk.


5 out of 5 stars
Reviewed by Leonora1978
5 out of 5 stars
Dec 12, 2017
Very happy with my antique book! It has been a pleasure doing business with you.
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Reviewed by 4444donna4444
5 out of 5 stars
Jul 16, 2016
Fantastic!!!! Super Seller ~ As Described ~ Safe & Fast Shipping
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Joyce and Jack Wedge

Plane Trigonometry by Crenshaw and Derr 1920s

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  • Vintage item from the 1920s
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