The stamp on the letter Randall finds in William's apartment is the John Steinbeck commemorative, which was issued in 1979 and carries a value of 15 cents. The first class letter postage rate was 15 cents from 1978-1981. The photo referenced in the letter was of an approximately 10 year old Randall (approximately 1990) and is not consistent with the time frame of 1978-1981 when the postage rate was 15 cents.