identify this spacesuit ?

Hi,

In order to complete an article about spacesuits,
could someone tell me what kind of suits are next
http://www.astrosurf.org/lombry/Scie...bert-white.jpg
for X-15 pilots, looks like a flightsuit, semi pressurised ?

http://www.astrosurf.org/lombry/Scie...-gilliland.jpg
for SR-71, looks like a spacesuit made of 2 layers, full pressurised ?

At last, what model of spacesuit used Alan Shepard in 1961 onboard Freedom 7
(look like a SR-71 suit, probably a bit modified)

Does someone know their name or model ref. ?

Thanks in advance

Thierry