Well, this brings back memories. Hamburgers hot dogs and jellied salads.
Mmmm, mmmmmm, good.
Anyways, I found what may be the perfect site for you
http://www.foodtimeline.org/fooddecades.html
Listings of fav foods from the 1900 to today.
An example from the 50's
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Barbecued short ribs
Toasted Tuna
Cocktail kabobs (button mushrooms and cocktail franks cut in half marinated in French dressing)
Broiled shrimp
Mix Trix (like Chex Mix)
Pumpernickel squares (crab meat, chili sauce, curry powder, mustard on pump)
Deviled almond rolls
Party pinwheels (dough, leftover meat, moistened with chili sauce, baked)
Cocktail knishes
Filled cream puffs (store-bought puffs filled with hot chicken salad, creamed shrimp, creamed turkey, served in a chafing dish)
Broiled mushroom caps
Baby pizzas (use English muffins!)
Sea-food celery (stuff flaked crab & mayo into cut celery. Garnish with paprika.)
Stuffed eggs (deviled eggs)
Sardine surprise (sardines mashed with hard cooked egg yolks, anchovy paste, dry mustard, butter, & spices. Served on squares on pumpernickel)
Ham rolls (boiled ham & liverwurst)
Dunks (aka dips): sour cream, shrimp, chive, horseradish, guacamole, pimiento, tuna
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I just realized, I'm still in the '50's