गूफ़

When Rose left as a baby at Mrs. Hartley's home, its front screen door is clearly from modern times.

Mr. Crampton's letter from his daughter, Grace, is correctly addressed to him at New York, New York. But her return address appears as Danbury, CT. The two-letter abbreviations for states weren't used until July 1963 as part of the Zip Code system. Before then, states had to be written out or spelled with common abbreviations. The abbreviation for Connecticut was Conn.