Why wasn't Donald Duck in the original DuckTales?

[KarlS]

@GospelX

On the note of Donald’s being tasked with caring for the triplets, their introduction came at a weird time in the media when niblings were introduced as characters just dropped off with known characters, often indefinitely. The Nancy comic strip spawned from that practice. I’m curious if this was based on a common practice in the 20’s and 30’s or if it was just in the “creative” air at the time.

I think it is convenient because it allows exactly as much or as little parenting as the plot of the week demands.