The building under construction where Steve has the elevator accident is Universal Studios administration. The building is located at the corner of Lankershin Blvd and Universal Hollywood Dr.
Known as a "Flashback" episode. There was a common practice in television production where there was a contract stating that a certain number of episodes had to be produced, but there may not have been enough in the budget to fully produce all episodes. Stock footage would then be used in a particular episode to pad out the runtime and meet the quota.
Contains several minutes of stock scenes from previous episodes. This is a prelude to season two's "The Return of the Robot Maker".
The second appearance for Henry Jones as the same character.