Combine cheese, ham, catsup, onion, and olives; beat with electric mixer or rotary beater.
Slice bread lengthwise in 7 slices.
Spread about 1/4 cup of ham filling on each long slice of bread.
Roll up each slice starting from the narrow end.
Wrap in foil and chill thoroughly.
Slice each roll in 6 to 8 slices.