[There is an interesting historical and background discussion of the 1974 production in New York in Samuel L. Leiter's unpublished "Encyclopedia of the New York Stage, 1970-1975", entry 29: "As You Like It". There is a playbill and a separate cast and production list on the Playbill website for the eight performances (December 3 to December 8) at the Mark Hellinger Theatre which Leiter describes (see here).
Cast
Duke: Michael Beint
Silvius: Geoffrey Burridge
Adam: Blake Butler
William, Ensemble: John Dallimore
Ensemble: Raymund Dring
Le Beau: Dennis Edwards
Charles: John Flint
Rosalind: Gregory Floy
Corin: John Gay
Hymen, Amiens: Ian Hanson
Orlando: Paul Hastings
Touchstone: Nigel Hawthorne
Oliver: David Howey
Ensemble: Andrew Johns
Audrey: Gordon Kaye
Ensemble, Jaques de Boys: Adam Kurakin
First Forest Lord, Ensemble: David Mace
Ensemble: Jeff Murray
Phoebe: Christopher Neame
Jacques: John Nettleton
Sir Oliver Martext, Ensemble: Christopher Robb
Celia: David Schofield
Ensemble, Dennis: Rod Willmott
Frederick: Gilbert Wynne
Production
Director: Clifford Williams
Scenic Design, Costume Design: Ralph Koltai
Lighting Design: Robert Ornbo
Stage Manager: Robert Findlay
Press Representative: Gifford / Wallace, Inc.
Producer: S. Hurok
Produced in Association with Herman Shumlin and Diana Shumlin,
Produced by Arrangement with The National Theatre of Great Britain