ACM has published some "History of Programming Languages" books (really conference proceedings) I picked up that are very interesting. Vol 1 was published in 1

ACM has published some "History of Programming Languages" books (really conference proceedings) I picked up that are very interesting. Vol 1 was published in 1981 and is on Amazon (http://amzn.com/0127450408 http://amzn.com/0127450408) and Vol 2, from 1996, is as well (http://amzn.com/0201895021 http://amzn.com/0201895021). There's a Vol 3 but I think it's just in the Digital Library. (http://dl.acm.org/citation.cfm?id=1238844&coll=DL&dl=GUIDE&CFID=349476680&CFTOKEN=50814356 http://dl.acm.org/citation.cfm?id=1238844&coll=DL&dl=GUIDE&C...)