http://nuclearweaponarchive.org/
http://nuclearweaponarchive.org/Nwfaq/Nfaq4.html
http://nuclearweaponarchive.org/Library/Brown/index.html
http://nuclearweaponarchive.org/Library/
http://nuclearweaponarchive.org/Library/DocumentArchive/Resources/PenneyPuWeapon.html
http://space.au.af.mil/primer/
http://space.au.af.mil/primer/us_missile_systems.pdf
http://space.au.af.mil/primer/spacecraft_design_structure_ops.pdf
http://space.au.af.mil/primer/rocket_theory.pdf
http://space.au.af.mil/primer/space_surveillance_network.pdf