Editor's Note: Betty White died on Dec. 31, 2021.
The assertion was true.
White, whose acting highlights included "The Golden Girls" and "The Mary Tyler Moore Show," was born on Jan. 17, 1922, in Oak Park, Illinois.
Meanwhile, Otto Frederick Rohwedder, of Iowa, designed and manufactured the first commercial bread-slicing machine around 1928, according to the Smithsonian National Museum of American History. Below is an image of the invention, courtesy of that agency.
The Smithsonian said of the machine, which Rohwedder's daughter donated to the museum in the early '70s, on its website:
It was used to slice loaves of fresh bakery bread at Korn's Bakery, in Rohwedder's home town of Davenport, Iowa, beginning in late 1928. This is Rohwedder's second automatic bread-slicer, the first having fallen apart after about six months of heavy use at Bench's Bakery, in Chillicothe, Missouri.
The public loved the convenience of sliced bread and, by 1929, Rohwedder's Mac-Roh Company was feverishly meeting the demand for bread-slicing machines. By the following year, the Continental Baking Company was selling sliced bread under the Wonder Bread label.
Wonder was one of the first major brands to mass distribute sliced bread in 1930, according to History. "By that point, the majority of Americans were eating commercially made bread, compared with decades earlier, when most of the supply still was homemade."
In sum, since White was born in early 1922 and Rohwedder invented the first commercial bread-slicing machine roughly six years later, in 1928, we rate this claim "true."