Cosmic Treadmill, Episode 124 - Justice League of America #219-220: Crisis in the Thunderbolt Dimension! (1983)
Say you folks like comic books? In this episode, multiversal transit cops Chris (@AceComics) and Reggie (@reggiereggie) look at what has been considered a "retcon done right" when they read issues #219 and #220 of Justice League of America from 1983, written by Roy Thomas and Gerry Conway (with an assist by Marv Wolfman) and drawn by Chuck Patton! After some biographical information about the creators involved (except for Marv...we've gone over him at length before), our alternate Earth investigators look at the character Black Canary and what came before these issues, which will serve as a new status quo for the character for years to come! After a break, our pair finish up the bios and talk about what constitutes a retcon, and what makes some acceptable while others are abhorred. They conclude the episode by explaining what Black Canary's been up to since learning this new origin. It's enough to make you stand up and belt out a Canary Cry, you don't want to miss it!
BREAK: Snippet of interview with Gerry Conway from "Off The Record Interview DVD," offtherecord.com