Marvel Team-Up (1972) #103

3rd appearance of Taskmaster (Anthony Masters)

"The Assassin Academy" – (22-page story) – Spider-Man and Ant-Man (Scott Lang) cross paths as both men investigate a mysterious organized crime operation in a warehouse on Lower Manhattan. The web-slinger is the first hero to go inside... and subsequently go down to defeat at the hands of the Taskmaster! Next it's Ant-Man's turn! However, the miniature hero succeeds in infiltrating the complex and freeing the wall-crawler! Now the astonishing Ant-Man and the Amazing Spider-Man pursue the Taskmaster to the top of the World Trade Center for their fight to the finish!