Where was the first mcdonald's built in the usa?
The McDonald brothers opened their first restaurant adjacent to the Monrovia Airport in 1937. It was a tiny octagonal building informally called The Airdrome. That octagonal building was later moved to 1398 North E Street in San Bernardino, California in 1940. It was originally a barbecue drive-in, but the brothers discovered that most of their profits came from hamburgers. In 1948, they closed their restaurant for three months, reopening it in December as a walk-up hamburger stand that sold hamburgers, potato chips, and orange juice; the following year, french fries and Coca-Cola were added to the menu. This simplified menu, and food preparation using assembly line principles, allowed them to sell hamburgers for 15 cents, or about half as much as at a sit-down restaurant. The restaurant was very successful, and the brothers started to franchise the concept in 1953.
Where was the first restaurant the McDonald family opened in the US?
Huntington Drive (Route 66) near the Monrovia Airport Monrovia, California adjacent to the Monrovia Airport
Oldest McDonald's restaurant
No context provided
Where was the first restaurant the McDonald family opened in the US that was simply called "McDonald's"?
West 14th and 1398 North E Streets in San Bernardino, California San Bernardino, California
Oldest McDonald's restaurant
https://en.wikipedia.org/wiki/Oldest%20McDonald%27s%20restaurant
Richard McDonald (died July 14, 1998) and Maurice McDonald (died December 11, 1971), together known as the McDonald Brothers, were American entrepreneurs who founded the fast food company McDonald's. 
Richard and Maurice McDonald
They opened the original McDonald's restaurant in 1940 in San Bernardino, California, where they created the Speedee Service System to produce their meals, a method that would become the standard for fast food.
Richard and Maurice McDonald
Richard McDonald and Maurice McDonald, together known as the McDonald Brothers, were American entrepreneurs who founded the fast food company McDonald's. The McDonald brothers opened their first restaurant adjacent to the Monrovia Airport in Monrovia, California in 1937. It was a tiny octagonal building informally called The Airdrome. This octagonal building was later moved to 1398 North E Street in San Bernardino, California in 1940. This location served as the original McDonald's restaurant, where they created the Speedee Service System to produce their meals, a method that would become the standard for fast food.