Beaver says Jackie is the only friend left from "the olden days," before they moved. June comments that Beaver and Jackie were great friends and "for a while, you must have eaten half your meals at his house." But, during that time period, it was Larry Mondello who was Beaver's "great friend" and who frequently ate at each other's houses. There was no friend named Jackie.
Ray Kellogg, who plays Jackie's father, appeared as the Cleavers' neighbor, Mr Donaldson, in Cat Out of the Bag (1958).