Notes:
This page contains various coins that were minted to commemorate the canal in some way.

	This coin commemorates the 1937 sesquicentenial of Cumberland, MD. I don't know if it was actually minted in that year, but it appears to be old enough for that to be the case.
	This coin from 1962 commemorates the civil war centenial in Williamsport MD. It mentions the C&O Canal and depicts a boat on the canal.
	This coin from 1963 commemorates the 200-year aniversary of Sharpsburg MD. It mentions the C&O Canal and depicts a boat on the canal.
	This is a wooden coin from the year 1977. It is from the C&O Canal Days festival at Williamsport MD.
	This is a wooden coin from the year 2000 that commemorates the 150-year aniversary of the completion of the canal from Georgetown to Cumberland.
	This appears to be a copper penny that was squished into a C&O Canal park coin.
	This is a fairly new coin that commemorates the canal. The packaging had the date 2002, so that's probably about the time it was minted.