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PART 3
How Consistent Can One Cancel Be
(or How Many Posters Can Be Canceled Before the Inkpad Runs Dry)

As stated, Smithsonian cancels flourished in the 1970s and into the early 1980s on Stamp Posters. I have covered in detail the cancels in 1972 - now I plan to cover each year till their demise in 1981 (May 28). I want to give a few examples of each year with supportive narrative to show the consistencies throughout the years. Starting in 1973, I show four prime examples and all are consistent with the others:
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