A Bit of Colorado Rockies History: 1990: August 14 - Denver area voters pass a 0.1 percent sales tax to finance construction of a new baseball stadium, if MLB awards a franchise. August 23 - Colorado's Baseball Advisory Committee, headed by Gov. Roy Romer, designates the Colorado Baseball Partnership to spearhead the formation of an ownership group. September 18 - The NL Expansion Committee hears Denver's presentation. December 18 - The NL unveils its short list of six potential expansion sites: Buffalo, Denver, Orlando, South Florida, Tampa-St. Petersburg and Washington, D.C. (source: MLB.com)