The newspapers repeatedly misidentify the prison as the "State Prison For Women" instead of the "State Penal Institution For Women" as seen on the gate plaque and warden's letterhead.
On Erica's prison record, her date of entry is February 12th and that Robin was born April 3rd. However, it also states she was born "after 4 months imprisonment". Also, Erica was five months pregnant when she entered prison.
Although a running subplot involves two inmates arguing over the heartthrob merits of Troy Donahue (then a Warners contract player), during an outdoor scene in the prison yard Donahue's name has clearly been dubbed over the women saying a different name, suggesting the exterior was shot first and the decision to use Donahue's name a later idea integrated during interior shooting.