Actually, related to your original request: I don't know "The death of Captain American" or any comics, really, but the closest thing I can think of to your description is The Silver Age by the aforementioned copperbadge. It's "an alternate universe in which Tony Stark was born in 1950 and the Winter Soldier was recovered in 1967, after a failed attempt to assassinate Howard and Maria Stark." He becomes Tony's friend and bodyguard. In Part 3, they find Steve.