Meatballs, but not THE Meatballs

This meatball recipe is from My Grandma Agar.  (Mother's meatball recipe was not written down, so Jan and I are attempted to reconstruct it--we will get it to you when we do.)

Meatballs

Corabell EARP Agar

1 1/2 pounds hamburger
1/2 pound ground pork
1 egg
salt & a little pepper
1/2 Cup milk
1 Cup cracker crumbs
tomato sauce

fry onions in skillet, add 2 cups tomatoes, 2 Tablespoons vinegar, 3 Tablespoons sugar, 1 Tablespoon flour, a little shake of cloves.

[That's the recipe as it appears on the cards.  I assume the top part is for the actual meatballs and the bottom part is the sauce.]