Since Orcad Layout has reached its end of life, pills I have started working with Allegro PCB Editor. While making some footprints, website like this
I stumbled across this repository of package and recommended land dimensions at Fairchild Semiconductor. I hope this is not a mistake by the webmaster and they keep the directory viewable. In either case, it is a good set of information to archive.
( sc705_dim.pdf )