During the series, we meet Edwin Jarvis, Howard Stark's butler, performed by James D'Arcy, who would later serve as inspiration for Tony Stark to create JARVIS, his loyal Artificial Intelligence.
The Roxxon Corporation is seen at various points in the series.
In Agent Carter Season 1 we see a young version of Anton Vanko, the father of Ivan Vanko / Whiplash, villain of Iron Man 2.
In Agent Carter Season 1, there are several references to the events of the Captain America: The First Avenger movie.
Dominic Cooper, Neal McDonough, and Toby Jones return to play Howard Stark, Dum Dum Dugan, and Arnim Zola, respectively, in Agent Carter Season 1 and Season 2.
In the first episode of Agent Carter, we see some flashbacks that show the events of this short film.