Aldrich, B.M. (M.S., Ass't professor of mechanical engineering, Oklahoma A & M College.
(1) Student Aid in Descriptive Geometry. 8x12 inches. 55 leaves. Blueprint. Self-produced. This is the Copyright Deposit copy, coming via the Library of Congress Pamphlet Collections. There are no copies located in the WorldCat catalog, finding no copies in any library worldwide in the WorldCat sysatem.
(2) Descriptive Geomnetry Aid. (1943-46) Revised edition of teh work above. 8x5 inches, 126pp. This too is the Copyright Deposit copy, from the Pamphlet Collection of the Library of Congress. WorldCat locates only five copies. Fine condition.
To my eye Aldrich presents an interesting way of placing geometrical figures in 3-space. I like the work.
The pair: $150.00