When Matt is checking the register at the Dodge House, the camera shows a close up of the register. The dates in the one column are 6/30, 6/31, and 7/1. The goof is that June (the 6th month) only has 30 days - the date of 6/31 doesn't exist!
"Come out into the street where you have room to fall." -Art McClain
"Free's the magic word." -Kitty