PAIR of vintage 1973 First Edition Texas Instruments books, as pictured.

 - The Transistor and Diode Data Book for Design Engineers - 1973 - first edition - approximately 9 1/2 x 7 - does not have sequential page numbering, book is about 2" thick.

 - The Power Semiconductor Data Book for Design Engineers - no copyright date located - first edition - same size and page stats as above.  Approx 1 3/4" thick.

Please refer to pics and email with questions.  Thanks!