Factual error: When Laura dropped Cody off at school, there was one boy (far left side of screen) wearing shorts. In 1950s (and later) California, boys were required to wear long pants to school (no shorts!) and girls had to wear dresses. (00:15:26)
Factual error: The typists were moving their fingers way too fast to be using manual typewriters (in the 1950s) and the sound was more like that which would come from electronic typewriters. Keys on manual typewriters had to be pressed fairly hard, one at a time, to ensure the letter would make a good imprint on the paper and prevent the keys/hammers from getting stacked on top of one another (jammed) if the typist's fingers moved faster than the keys did. Accuracy over speed was important to avoid errors. (00:16:14)
