 The crossover was fleshed out and coordinated at a meeting attended by president Jenette Kahn, Paul Levitz, vice president and executive editor Dick Giordano and DC's editors.In 1982, DC hired a researcher to go through their library and read every comic the company had published, a task that took two years.The series was delayed to 1983 due to the time for research, and again to 1985 when it was still not ready for 1983 and to coincide with DC's fiftieth anniversary.