Remembered that too! it was a good connection
Peggy even blew up their refinery in S1 xD This was a great easter egg.
Roxxon Corp. is from the comics, you can find references to it spiderman games and movies, MCU movies and shows and non-mcu media as well. So it wasn't a reference to agent Carter but to marvel comics in general.
Shout by Izsák AttilaBlockedParent2016-03-18T18:44:04Z
roxxon corporation? that was in agent carter, right?