John Tomlinson Brush was an owner of the baseball New York Giants who died in 1913. In 1911, the Polo Grounds was then called "Brush Stadium."
Wikipedia: Yankee Stadium (1923)
The original Yankee Stadium was a stadium located in the Bronx in New York City. It was the home ballpark of the New York Yankees, one of the city's Major League Baseball franchises, from 1923 to 2008, except for 1974–1975 when the stadium was renovated. It hosted 6,581 Yankees regular season home games during its 85-year history. It was also the home of the New York Giants National Football League (NFL) team from 1956 through September 1973. The stadium's nickname, "The House That Ruth Built", is derived from Babe Ruth, the baseball superstar whose prime years coincided with the stadium's opening and the beginning of the Yankees' winning history. It has often been referred to as "The Cathedral of Baseball".
(See "Brush Stadium" -- ed.)
17 April 1912, Los Angeles (CA) Times, pg. III2:
Twelve thousand Portland fans today dedicated the greatest baseball stadium on the Pacific Slope and incidentally they saw San Francisco win from the champions, 2 to 1.
8 April 2006, New York (NY) Post, pg. 23, col. 1:
Yankee Stadium was the first ballpark to be called a "Stadium" rather than a "Field," a "Park" or a "Grounds."
Trivia: Yankee Stadium was the first ballpark to be called a stadium. A grandstand ticket for opening day was $1.10.
9:48 PM · Sep 21, 2008
シ Jay Massey ⭐
The 1st sports facility in the U.S. to be called a stadium was none other than Yankee Stadium - for @jam17
11:31 AM · Apr 15, 2013
#BaseballandtheLaw ⚾️ 🏛
The @Yankees began building @YankeeStadium in May 1922. Built for $2.5 million, & constructed using a new type of cement invented by #ThomasEdison, it was the 1st ballpark to be called a #Stadium."The House That Ruth Built" (2011) by @robwein @littlebrown #BaseballandtheLaw p 505
10:36 PM · May 21, 2019
Replying to @lost_ballparks
"Yankee Stadium, seen here in 1962, was the first ballpark to be called a "Stadium"
10:23 PM · Apr 8, 2020
Jon Blackwell (This Day in 1923)
Yankees owner Jacob Ruppert takes full advantage with plans for the team's own ballpark, the first in baseball history to be called a "stadium." (However, newspaper accounts of January 1921 never mention that the park will be called Yankee Stadium.) 3/5
10:50 AM · Jan 29, 2021
New York City • Sports/Games • Sunday, April 09, 2006 • Permalink