The book that launched my career. Kathe Spracklen was my instructor for a class in 8080 assembly language programming in early 1979. She was hired by my employer, Cubic Western Data of San Diego, CA, to teach a small group of us 8080 assembly language programming (see "Intel 8080" on Wikipedia, I added the part about the 8080 being used in Cubic's systems which I worked on at that time). Actually, my copy isn't the one in paperback... It was her "draft" of the book, titled at that time "Introduction to 8080 and Z80 Assembly Language Programming" - and was printed on single sided 8.5" x 11" standard sheet three-hole punched and covered back and front with clear plastic sheets. I still have this copy on my bookshelf.