A history of ballpark fires

From this week's column for Ballpark Digest, caused by the terrible fire at West Michigan's Fifth Third Ballpark:

Ballpark fires are extreme rare these days, but at one time were a major threat to baseball operations. Jesse Goldberg-Strassler looks at how ballpark design changed because of fire awareness: 

http://ballparkdigest.com/201401176982/minor-league-baseball/features/fifth-third-fire-brings-back-memories-of-past-ballpark-blazes