In his first two letters to G. H. Hardy and in his notebooks, Ramanujan rec
orded many theorems about the Rogers-Ramanujan continued fraction. In his l
ost notebook, he offered several further assertions. The purpose of this pa
per is to provide proofs for many of the claims about the Rogers-Ramanujan
and generalized Rogers-Ramanujan continued fractions found in the lost note
book. These theorems involve, among other things, modular equations, transf
ormations, zeros, and class invariants.