[Benito Cereno]

THe calendar is missing December 2 and 3, and the 29th seems to be highlighted in red for some reason. Perhaps this was someone’s idea of a prank.

[SamAdams76]

It certainly is bizarre. Also, bear in mind that Thanksgiving did not become a federal holiday until 1941, when Congress established it as the 4th Thursday in November. All those drawings of pilgrims and turkeys seem out of place in a 1917 classroom.

I’m thinking those chalkboards are not genuine after all.

[KarlInOhio]

It looks like a November 1917 calendar, but the month name and first week were changed to December. Also note that the last Thursday of the month is highlighted, which is when Thanksgiving was before FDR moved it to the fourth Thursday.