There's a nice LSI-11 brochure going on eBay: http://www.ebay.com/itm/291318103446 It's got pictures of a lot of different kinds of cards (useful for ID purposes), a modest amount of technical content, etc. Definitely worth having if you're a PDP-11 collector, and can get it for not too much (I already have one, don't need another... :-) Noel