Lot of three vintage technical books of electronic switching circuits from the estate of an electrical engineer. There are:
Pulse and Switching Circuits - by Harvey Swearer - 1970 with 254 pages;
Switching Circuits with Computer Applications - by Watts S Humphrey - 1958 with 263 pages and the remains for the original dust jacket;
Electronic Switching, Timing and Pulse Circuits - part of the McGraw-Hill Electrical and Electronic Engineering Series - 1959 with 267 pages.
These are in nice vintage condition with names inside the covers.