I'm from England, and i wish to send three seperate autograph requests across to the USA, does anyone know how many/which stamps this will take?

its an A4 envelope

also, do i need to include a photo?

thanks

P.S. i've tried the official website of jon jones ad the online request section doesn't appear to work for me...

hello, im new to this website and don't really know what i'm doing, but i have searched and i can't seem to find these adresses, i don't know if anyone could help me? :? i'm looking for the adresses of MMA and UFC fighters, Jon Jones and James McSweeney... any help would be much apreciated! thanks :D