The colors ARE gorgeous!

Zwiebeck cookies lasted well into the 20th century, unless I'm mis-remembering eating them! :)
They still exist. They're great to feed to teething babies! My understanding is that they're a type of cookie, not a brand name. I wonder if the Fleishmann's is the company that still makes the yeast, but they dropped one of the "n"s at some point.
Gorgeous ad!

My understanding is that they're a type of cookie, not a brand name.

Yep, "zwieback" means "twice-baked", like "biscotti" does and "biscuit" originally did.
That is amazing printing! I'm blown away by the tight color registration! That's craftsmanship!
I totally thought she was holding a slab of bologna, and the ad was for Fleischmann's Vienna Sausage/meat of some sort. (I didn't know what Zwieback was!)
When my brother was a baby/toddler, I remember eating some of his zwieback cookies. I loved those things. Don't think I've had any since I was about seven or so, but I still remember what they tasted like.
Gorgeous advert! But because the girl looks a little like Alice, I started channeling Grace Slick, "One Zwieback makes you larger, and one Zwieback makes you small...."
Hah, nice.
"...tell 'em a cookie snacking caterpillar, has given you the call..."
Man, ads today just can't compete with stuff like this.