Reusing Vintage Calendars
I have always enjoyed model railroads where the crew space picks up the time theme of the railroad by having vintage decor to match the modelled era. One thing that can help are old calendars that just happen to match the current year, so they are useful as well as decorative.
If you think about it, there are really only 14 calendars for all time, seven for regular years, and seven for leap-years, as each calendar year can only start on one of the seven days of the week.
I sat down and made up an equivalence chart that shows the matching complete years through the last century, and it is available below.
If you are happy to ignore February 29th, and are only concerned with the individual months, then the number of matching calendars goes way up. I have included those files as well below.
As an example, for the year, 2016, the matching years for the entire year are: 1904, 1932, 1960, and 1988
Ignoring February 29th, the matching years for January and February are: 1904, 1909, 1915, 1926, 1932, 1937, 1943, 1954, 1960, 1965, 1971, 1982, 1988, 1993, 1999, and 2010
and the matches for March to December are: 1904, 1910, 1921, 1927, 1932, 1938, 1949, 1955, 1960, 1966, 1977, 1983, 1988, 1994, 2005, and 2011