I found AeroMaster makes decals for the A-3B Skywarrior. Check out the link below:
http://www.aeromaster.com/cgi-bin/amd2.pl
Also for the others, check out the following link (I didn't have time to check them all). About half way down the page you will see a links for “Model, Decal and other accessory model sites”, etc. If they exist, they will most likely be sold on one of these sites. Swanny put together a great site that has all the model links you will ever need in one place. In the event they do not, the site also has links to where you can get custom decals made as a last resort.
http://www.swannysmodels.com/Links.html
Hope this is helpful.
Regards,
Paul