K&E Log Slide Rule Manuals Books Log Log Duplex Decitrig #4081 + Vector #4083

Description

Two K&E Log Slide Rule Manuals: Log Log Decitrig #4081 and Vector #4083
Offered are two books that the original owner bound together.  The pages are all there, clean and undamaged but the covers and binding are hard to describe so please examine the pictures closely.  An owner name and address is stamped on the inside cover and on the front page of #4081.
The text block of each manual is separated from its respective cover elements.
The front cover of  No 4081 and the back cover of No. 4083 have been totally glued to the front and back cover of the binding the owner has created so you can’t see them. The two Manuals are:
Log Log Duplex Decitrig Slide Rule No. 4081
, Keuffel & Esser, last copyright date 1955, 126 pages - the cover page has a small tear that has been taped. The text block is tight, but not attached to the hardcover.
Log Log Duplex Vector Slide Rule No. 4083 Supplementary Manual
,
Keuffel & Esser, last copyright date 1956, 37 pages-  There is some writing in pencil on the last page that has no printing on it.  The tightly bound pages have separated as one from the hardcover but otherwise the binding is fine.
----Please examine Pictures for more details.
►    We are thinning contents of our smoke-free, pet-free home.  Books will be listed, plus toys including Transformers, CCG and trading cards, Lionel Train items, jigsaw puzzles, jewelry, household items and maybe some of my fishing and workshop stuff.