Grothedieck wrote, in the introduction of his EGA, Chapter V would be Procedes elementaires de construction de schemas(Elementary procedures for construction of schemes). I wonder what he meant by it. He wrote in his letter to Serre(10.31.1959) that he essentially finished chapter V. I can guess the contents of the other unpublished chapters, by the way.
I've got good news for you: you can actually read an online version of fragments of EGA V !
In the 1990's Piotr Blass, Joseph Blass and Stan Klas wrote articles giving their translation and interpretation of Grothendieck's prenotes of part V of EGA.