The history of Macy's Thanksgiving Parade: 5 things you may not know

Todd Leopold, CNNUpdated 21st November 2020

https://www.cnn.com/travel/article/macys-thanksgiving-day-parade-feat/index.html

1. It was originally a Christmas parade

The original store was about 20 blocks south on Sixth Avenue near 14th Street. Macy's has been at its current flagship location, at Broadway and 34th Street, since 1902. Continuing expansion made the location what Macy's called the "world's largest store," an entire city block with more than 1 million square feet of retail space.
In celebration, employees organized a Christmas parade in 1924 featuring "floats, bands, animals from the zoo and 10,000 onlookers," according to a Macy's history page. It also started way up at 145th Street. The parade concluded with Santa Claus and the unveiling of the store's Christmas windows. Three years later, the Christmas Parade was renamed the Thanksgiving Day Parade.
Macy's didn't invent the practice. Philadelphia has the oldest Thanksgiving Day parade: Its Gimbels Thanksgiving Day Parade, now the 6ABC - Dunkin' Donuts Thanksgiving Day Parade, debuted in 1920.

2. The parade was first broadcast on the radio

You had to use your imagination when the first broadcasts of the parade took place in 1932; they were on the radio. The parade was first televised in 1946 in New York and then nationally on NBC the next year.