Incredible Hulk #393 is an anniversary issue (an actual anniversary, for once!), and contains a long text piece basically about Hulk's life history (as if written by Doc Samson).
Walter Langkowski is namedropped a couple of times, and a panel of AF (from Sas's origin) is reprinted.
My copy is in The Incredible Hulk by Peter David omnibus, the mentions of Walt one pages 743 and 746.