Here is a copy of Captain America #141- September 1971
It is in used condition.
See pics for condition.
THE UNHOLY ALLIANCE
,"Captain America finds the Falcon and brings him back to the S.H.I.E.L.D helicarrier. Once on board, the Falcon's mixed alliances make him bring the Grey Gargoyle on board. Once on board it is a race to stop the Gargoyle before he can acquire Element X."