Old C.&G.S. Sea Chart of Hyannis Harbor and Vicinity – No. 13064
No 13064 / CS 258 / Edition 6-3-68 / B1287
The size is 39" Wide X 34" High.
The map shows its age, but considering it is over 50 years old and the connotations on the back side indicate that it was used at sea, it is still in pretty good shape.