Not to be forgotten is the wonderful HP Journal. For example, here is an issue from 1972, lots of wonderful technical details about the newly introduced HP-35

Not to be forgotten is the wonderful HP Journal. For example, here is an issue from 1972, lots of wonderful technical details about the newly introduced HP-35 calculator: http://hparchive.com/Journals/HPJ-1972-06.pdf http://hparchive.com/Journals/HPJ-1972-06.pdf I'd sarcastically say "thanks, Carly" for destroying HP. But I don't think it was a one-man or one-woman effort. I think she had plenty of help.