State and local economic development officials had asked developers and communities interested in hosting Amazon’s second headquarters to detail everything from the drive time to Denver International Airport to cellphone coverage and transit options. They had also scrambled to prove that colleges and universities in the region could provide Amazon with enough business and computer science graduates for the up to 50,000 positions the company could seek — while, in the process, revealing a weak spot in the state’s pitch. Those are some of the additional details found in nearly 600 pages of emails and reports that the Colorado Office of Economic Development released Monday night and Tuesday.