Ok, time to test the ‘93 recipe, here called Dady's Brownies. I wasn't sure about this one, because the first ingredient is this(and I found no conversions in the book itself):

People from the US will use anything except the metric system.
Someone on reddit had a similar problem trying to follow an old cookie recipe, and thanks to the people in the comment section I learned that each of these squares was one ounce. I didn't even bother converting it since I can just change the mode on my kitchen scale—so practical, isn't it?
I mentioned that this book had watercolors instead of pictures of the finished product, but many of the recipes, this one included, don't even have that.

There's this one of something being cooked, but I'm not sure if it's meant to be the brownies… quite lovely, though, isn't it?
Anyway, here's how mine turned out:

Rather light-colored (because of the chocolate I used, probably) but I liked the taste and texture of these ones better than the ones from the 2016 cookbook.
Ms. Tasha suggests frosting these with chocolate fudge, recipe included—I won't be making it since I don't actually know what fudge is, don't have the ingredients for it and it also seems like a pain.
I hope they all get eaten soon so I can test yet another brownie recipe from one of the cookbooks I have around (not Tasha Tudor's this time!).