Why Peoria loves spring training: $5.2 million - Ballpark Digest
AP exclusive: MLB average salary up 11% year after lockout
Orioles Economic Impact in Florida Tops $545 Million Since 2015
Examining the economic impact of the MLB lockout on spring training in Arizona - PHNX
Salt River Fields at Talking Stick will operate at 17% capacity due to Covid-19
Cactus League Expects Full Crowds, Significant Economic Impact With Spring Training – Arizona Daily Independent
Spring Training an Economic Boon for Lee County
MLB gives players' union Sunday deadline to accept new economic proposal
MLB lockout talks progress, but clock ticks as spring training nears
KJZZ
Spring Training: Why Arizona Beats Florida - WSJ