The following people are credited as replacements or additions if they were not credited on opening night.

Doris Belack	April Pitt
John Heffernan	Jason Pepper, M.D.
Joseph Leon	Harry Scupp
Brooks Morton	Francis Tear
Paul B. Price	Jason Pepper, M.D.	(May 12, 1974 - ?)
Sasha von Scherler	Dolly Scupp

Standbys: Rose Arrick (April Pitt), Stephen D. Newman (Otto, Roy Pitt).

Understudies: Rose Arrick (Dolly Scupp), Richard Libertini (Harry Scupp, Jason Pepper, M.D.).

Doris Belack	Ruth Benson, R.N.
John Heffernan	Hugh Gumbs
Joseph Leon	Mr. Yamadoro
Brooks Morton	Dr. Toynbee
Paul B. Price	Hugh Gumbs	(May 12, 1974 - ?)
Sasha von Scherler	Becky Hedges, R.N.

Standbys: Rose Arrick (Becky Hedges, R.N., Ruth Benson, R.N.), Stephen D. Newman (Bruno, Mr. Blum, Mr. Yamadoro).

Understudy: Richard Libertini (Hugh Gumbs).