Ingredients

6 lb           fully cooked ham, cubed
6 lb           macaroni, cooked & drained
3 lb           shredded cheddar cheese
2  bags     frozen peas, thawed   -20 ounces each                 
2  bn         celery, chopped (12 cups)
2 lg           onions, chopped (2 1/2 cups)
2 cn           pitted ripe olives, drained -and sliced 
                     
Dressing
2 qt           mayonaise
1               bottle western or French salad dressing                     
1/4 cup     vinegar
1/4 cup     sugar
1 cup         light cream
1 1/2  tsp   onion salt
1 1/2  tsp   garlic salt
1 tbs          salt
1  tbs         pepper
Combine first 7 ingredients. Combine all dressing ingredients; 
pour over the ham mixture and toss.  Refrigerate.

Source: MasterCook