1930-31 Headlight Overalls Railroad Time Book

Headlight Overalls Railroad Time Book issued by Headlight Overall Manufacturing Co./Larned, Carter & Co., Cincinnati, Ohio. I posted the book as being from 1930-31, but the calendar inside the book is for 1933-34. The original owner, Edwin Wickman, didn't use the book until 1936. If you look closely at the calendar, you'll notice it was glued over another calendar. I don't know if this modification was done by the publisher or Mr. Wickman. I went into Photoshop and was able to pull up the original calendar which was 1930-31. You can see this image below.