Source: a 70s Betty Crocker recipe
4 ounces fine noodles
1 pound ground beef
1 medium onion, chopped (about 1/2 cup)
2 cups sliced celery
1/2 cup catsup
1 (2 1/2 ounce) jar sliced mushrooms
1 (14 1/2 ounce) can tomatoes
2 teaspoons salt
1/4 teaspoon pepper
Add 1 1/2 teaspoons salt to 1 1/2 quarts water. Bring to a boil. Cook noodles in boiling water until done.
While noodles cook, cook and stir ground beef and onion in large skillet until meat is brown and onion is tender. Drain off fat.
Stir in drained noodles, celery, catsup, mushrooms (with liquid), tomatoes, salt and pepper. Cover; simmer 30-45 minutes.