Does anyone have a 1970s-era recipe for dark chocolate brownies with finely shredded carrots and zucchini

In the 1970s, the Moore's Flour Mill (renamed Bob's Red Mill) in Oak Grove, Oregon, had a small store that sold baked goods, including these dark chocolate brownies with finely shredded carrots and zucchini.

The mill burned down in 1988. https://lostoregon.org/2024/02/11/lost-moores-flour-mill-in-oak-grove/

I've tried contacting Bob's Red Mill about the recipe. Nobody knew what I was talking about.

If anyone here has that recipe or something similar, could you please share it with me?