Lot of vintage DIY do-it-yourself electronic project books

Lot of retro 1970s DIY do-it-yourself electronics project books. These are full of fun and interesting projects such as regulated power supplies, short wave and ham radio projects, music synthesizer, test equipment and much more! They are all out of the estate of a shortwave radio enthusiast and electrical engineer.

There are:

Radio Shack's Electronic Music Projects - Vol. 1 - 1976 - 95 pages;

Radio Shack's Integrated Circuit Projects volume 3 - 1976 - 96 pages;

Radio Shack's Integrated Circuit Projects volume 4 - op-amps - 1977 - 94 pages;

Radio Shack's Integrated Circuit Projects volume 6 - 1977 - 95 pages;

There is also 99 Electronic Projects by Herbert Friedman and published by Howard Sams. It is copyright 1971 with 128 pages.

These are in nice vintage condition, but do have names on them in pen.