Superman - 17 - Secret Agent (1943) 1080p

Secret Agent is the last in a series of seventeen Technicolor animated shorts based on the DC Comics character, Superman.

A federal agent is tasked with delivering important documents to Washington, D.C. and must evade a group of saboteurs who are trying to stop her...

This is the only short in which Lois Lane doesn't appear, although a female federal agent who looks identical to Lois (just with blonde hair) appears, and is also voiced by Joan Alexander.