This is a special menu serving the Pittsburgh, Pennsylvania Shriners, who were on their way to Los Angeles for an annual convention. The only direct route between Pittsburgh and Los Angeles that would take the Southern Pacific would have been the Golden State route, but it is possible they used a less direct route through New Orleans or San Francisco. Though the trip took place in 1950, it could easily have been on a heavyweight train.
The breakfast menu itself offers a choice of an omelet, ham or bacon with eggs, or two eggs. These entrées come with juice, fruit, or cereal, toast or muffins, and a beverage. There are no prices on the menu, indicating the meals were included in the package tour.