Marvel Team-Up Vol. 1 #88

Plot

Guest-starring Spider-Man and the Invisible Girl. Peter Parker and Susan Richards are attending a Central Park society luncheon, when suddenly the Invisible Girl receives a dramatic phone call! Her son Franklin has been kidnapped! And now the abductors, the Maggia, want the female member of the Fantastic Four to do their bidding or else! The Maggia's trail leads first to Harlem and then to the Bronx; but fortunately, Sue picks up an ally along the way...the Amazing Spider-Man! The web-slinger and the Invisible Girl make their last stand in the bowels of the New York subway system! Will the two heroes reach Franklin before it's too late? (mycomicshop.com)