I am trying to get some insights for the combinatorial argument of Pitts (in his PhD thesis 'Existence and regularity of minimal surfaces in Riemannian manifolds', Princeton University Press, 1981) to prove the existence of suitable class of varifolds in the so-called Almgren-Pitts theory. Pitts quotes the reference 'The theory of varifolds' (Almgren, mimeographed notes, Princeton, 1965) as the origin of his argument.

Unfortunately, I have no idea where to find this text, so any help would be very appreciated.