Note Pads, also called Shopping Tablets were a wonderful & useful complimentary handout by the typewriter companies. Between celluloid front & back covers were 2-4 silicate pages that could be written on in pencil and easily erased for future use. They all had calendars on the back. The earliest calendar I have seen was John Underwood’s 1891, the latest was Remington’s 1914.

Underwood Typewriter Co. Note Pad

John Underwood & Co. Note Pads

Remington Note Pad