historical cleveland auditorium seating sport capacity

images.ulib.csuohio.edu/cdm/singleitem/collection/postcards/id/4051/rec/1

images.ulib.csuohio.edu/cdm/singleitem/collection/postcards/id/4052/rec/2

one site says 12 500, another 13 100+,  this was historical boxing arena[http://archive.boxing.media/big_bob_baker.html]

this source says 12 500 was general seating capacity:

George Condon (1995). "Chapter 7, Sutphin's Surprise". The Man in the Arena: The Life and Times of A.C. Sutphin. The A.C. Sutphin Foundation. pp. 51–67. ISBN 0-9649900-1-6.

more sources on different sports have different seating capacities:

books.google.co.il/books?id=typSAgAAQBAJ&pg=PA220&lpg=PA220&dq=cleveland+arena+capacity+12+500&source=bl&ots=SFSUrRFoha&sig=ACfU3U2rstdKzRooSo4a8rgbj0o6oUHsXw&hl=en&sa=X&ved=2ahUKEwjogdrY063tAhWWQc0KHbagClQQ6AEwBnoECAgQAg#v=onepage&q=cleveland%20arena%20capacity%2012%20500&f=false