This one just because separating out all those courses can be rough on the retro woman. Nice combo of potato and tuna salad too.
1/2 head lettuce, broken in small pieces
1 9 1/4 oz can flaked tuna
1 No. 303 can peas, drained
3 cooked potatoes, diced
2 sweet pickles, chopped
1/2 medium onion chopped
1/2 c. chopped celery
salt to taste
Salad dressing or mayonnaise
Reserve 1/2 of lettuce. Combine remaining lettuce with other ingredients. Toss lightly. Chill. Serve on reserved lettuce. 6 servings

Hmmm… almost sounds good. Kind of a strange mix, but could be tasty.
Sort of a potato tuna salad…I am not sure that I like the texture of the lettuce in it.