I was thinking about this, and I realized that game attendance could teach me a lot about baseball's history and 1920's urban America. For example:
My grandfather loves baseball, and has since he was a boy, ~70 years ago. At the time, baseball was the undisputed American Pastime. In 1923, however, the Yankees had only existed under that name for 10 years and been in New York for 20. Baseball had been professional in any sense for only ~50 years. Did older people go watch this sport that might not have been around when they were children?
How many watching the game that day--and by the way, if the game in the title is unrepresentative of its time, feel free to ignore it--were first-generation immigrants? Did immigrants tend to adopt this weird game with its byzantine rules, or ignore it in favor of other spectator sports of the time (boxing/horse races/??)?
How many were black? Were black people allowed in the stadium at all? Was there segregated seating?
How many watching were women?
Was there anything like the modern "luxury/executive box seating" we have in modern stadiums? Were there broad disparities in ticket prices?
There's a lot of questions here, but I'd appreciate whatever answers people could give! Thanks!
I think you'd be interested in "The Glory of Their Times" by Lawrence Ritter- it's a collection of interviews taken in the 50s/60s with players who mostly played before 1930, and is a great look at the player's perspective of the time.
I don't have a lot of books about the Yankees specifically, more the league in general, but I think I can help-
Baseball crowds changed a lot after 1920, or at least the perception of baseball crowds changed. In 1919, there was a cheating scandal in the World Series. To combat the then common perception of the players as rough hooligans playing before gamblers and drunkards (drinking at baseball games has a long and varied history of being banned, unbanned, only banned on Sundays, based on a wide variety of league rules, city ordinances, etc), the owners of the various teams got together and hired a federal judge to act as league commissioner, Kenesaw Mountain Landis. Landis went in with the view that baseball needed to be cleaned up. There's a line I remember him saying about "making the ballpark a place to take a woman"- but I can't find it in the first couple books I checked, so maybe it was something someone else said about him.
But we get rules that ban the spitball because let's be honest, it sounds disgusting. He forces the NY Giants owner Charles Stoneham and Hall of Fame manager John McGraw to sell their interest in a racetrack, because we really don't want players/managers/owners hanging out with gamblers all day.
He cracks down hard on players who have connections with gamblers, whether there's proof they're throwing games or not. 18 players ended up being banned in the first few years of his tenure, and these were high profile cases with a lot of media attention, even if the players involved weren't stars.
He also cracked down on barnstorming, which was an offseason practice of many star players to supplement their salaries by appearing in a mix of exhibition games, vaudeville shows, films, anything where they could capitalize on their fame. It was also a part of the reason baseball players were seen as not members of respectable society.
So in 1923, baseball has mostly recovered from the Black Sox incident. Attendance, which dived in 1920, has recovered if not surpassed its previous marks Its not common for women to be at the ballpark, but not so rare that it's particularly remarkable. Players are fined for using language "unfit for ladies to hear" when arguing with umpires.
At the opening day ceremony for Yankee Stadium "Governors, generals, colonels, politicians, and baseball officials gathered together solemnly to dedicate the biggest stadium in baseball" according to the NY Times. >60000 people show up, the largest crowd ever for a baseball game. Looking at the pictures of that day in "Yankee Stadium, 75 years of Drama, Glamour, and Glory" (Robinson, Jennison), there are either 3 or 4 women's hats I can see in a crowd of at least 500 identifiable hats. Perhaps more importantly, in the advertising crowd shot, there are no women, which to me implies that they're not really expected to be there. I feel we can say with certainty that there were very few women, but there were some.
In terms of black spectators, this book is silent, which bemystifies me. Based on references I've seen in other books, southern stadiums like St. Louis and Washington DC definitely had segregated seating, but the bleachers in Cleveland, Detroit, Boston, etc were unsegregated by WW2.
The advertising material I've got says 15c for a ticket, and doesn't talk about different prices.
Hope some of this helps, if you want more book recommendations I'd be glad to point some out
Edit: fix some grammar and a sentence that didn't have an end and now a sentence that was wrong
Follow up question: How did the fluidity of early baseball teams names and home towns play into the development of the game?