I have two Constellation manuals, one for the C-121 and one for the C-69. "Pilot's Flight Operating Instructions for Army Model C-69". I am cleaning the C-69 manual for my website TailWheel.nl . I'll notify you when it is available. No Convair 580 or SAAB manuals. But similar to the Convair, I have Martin 404 manuals.
Thanks Flyboy and Ron, great work there. Ron, your site is quite a treasure, thanks for putting it together! I'll be waititng for that Connie and Martin manuals. No rush!