Lums bought Ollie's Trolleys and started serving his  burgers.

They were outstanding. No need for ketchup, mustard or any seasoning. 

I found the below recipe on a "copycat recipe" site. 
It was one of two. The other one was exactly the same 
except it left off the Heinz 57 and added 1 tsp black pepper. 

Lum's Ollie Burger Clone

Marinade:

3 T. lemon juice
1 1/2 t. seasoned salt
1 T. worcestershire
1 T. soy sauce
1 T. A-1 steak sauce
1 T. corn oil
1/2 c. canned beef broth
1 t. Heinz 57 sauce
1/4 t. garlic salt
1 t. vinegar

Mix the above ingredients. Take 1 1/2 to 2 lbs. of ground round and 
shape meat into round patties, 3/4" thick and 3 1/2" round.

Place in a covered container and pour the marinade mixture over them. 
Cover tightly and refrigerate 12 hours or overnight.

Turn the patties frequently. Remove from marinade and sear over high 
heat to seal in the juices, then turn down heat and cook to your desired 
doneness.

For more flavorful burgers, double the ingredients except the broth, 
reduce it by half.