I don't have the recipe in front of me, but if this interests you let me know and I will send it.
Macaroni of course and chopped celery, green onion, black olives, hard boiled egg, onion, and and tuna. Dressing is mayo, mustard, sugar, vinegar, milk for moisture and garnish with quartered tomatoes.
I hate HB eggs so don't use them. Just takes less milk to moisten.