Kit's dad is seen leaving for Chicago in a Flxible Clipper bus, which was not produced until 1937, three years after the movie's 1934 setting.
When Kitt gives the Cincinnati Register Editor her stories to read, they are in a portfolio envelope. When the Editor opens the portfolio, he removes an attached, corded elastic band which was stretched around the portfolio. Corded elastic bands for these types of thin cardboard portfolios did not exist in 1934. These envelopes would be tied with an attached, flattened cloth grosgrain ribbon type of tie.
The bank that's foreclosing the houses is located at 510 Main Street in Cincinnati, between Eighth and John Streets. 510 Main is actually between Fifth and Sixth Streets.