This is a vintage 1980s early PC personal portable computer User's Guide reference book that I found at a Seattle area estate sale. It is a 1985, 99 Programing Tips for IBM Personal Computer User Guide (see pictures). It is in very good lightly used condition, no missing complete (see pictures). This vintage 1980s early computer manual comes as shown in the pictures. Should be of interest to vintage 1970s-1980s PC user books-accessories-memorabilia & vintage IBM / BYTE / Apple / TI / Osborne publication related collectors. Take a look at the pictures & e-mail me with questions. Buyer pays $3.90 USA shipping. I will combine the shipping for multiple sale buyers.