re: #12 Shropshire_Slasher
The project was first conceived in the 1940s, and it ultimately took the Rockefellers and Chase Manhattan bank to finance the project based on the Minoru Yamasaki design starting in 1966. The Twin Towers were a white elephant from its completion in 1972-1974 (3-7 WTC came at different time periods thereafter), and didn’t reach full occupancy until just before the attacks.