Lot of 1950 through 1970s vintage technical books on IC integrated circuits and transistors.. These are from the estate of an electrical engineer and have names inside the covers and wear to the dust jackets, but otherwise are in nice vintage condition.
There are: "Integrated Circuits: A User's Handbook" - 1977 by Michael M Cirovic, 304 pages with lots of illustrations,;
"Transistor Electronics" - 1957 by David Dewitt and Arthur Rossoff, 381 pages with equations, schematics,diagrams, graphs etc.
"Transistor Physics and Circuits" - 1958 by Robert Riddle and Marlin Ristenbatt, 428 pages with lots of schematics, graphs, circuit diagrams etc.