This 4th episode of "The Life and Times of $crooge McDuck" has two panels from Carl Barks' "Only a Poor Old Man" (OS 386) :
Panels from "Only a Poor Old Man" are used in "Cash Flow" (AR 106), "Last Sled to Dawson" (AR 113), "The Billionaire Of Dismal Downs" (D 93121), "The Empire-Builder from Calisota" (D 93288), and "The Richest Duck in the World" (D 93488).