Betty's heartfelt confession to Glen in a wintry parking lot - with both characters wrapped up in heavy coats - was actually shot on one of the hottest days of the year.
The carousel images were shot over a weekend two weeks before the episode was filmed.
This episode was included on the 2008 Emmy Awards 'For Your Consideration' DVD. Matthew Weiner and Robin Veith were nominated for an Emmy for "Outstanding Writing for a Drama Series".
When Pete Campbell protests being teamed up with Peggy Olson ("some little girl"), Draper tells him to "give back that copy of Ayn Rand". He's likely talking about Rand's dystopian "Atlas Shrugged", in which the woman railroad exec Dagny Taggart joins forces with a steel magnate against an increasingly unfree world - implying Campbell should take it as a hint about Peggy's true potential.