The Apollo Applications Program (AAP) was created as early as 1966 by NASA headquarters to develop science-based human spaceflight missions using hardware developed for the Apollo program. AAP was the ultimate development of a number of official and unofficial Apollo follow-on projects studied at various NASA labs.[1] However, the AAP's ambitious initial plans became an early casualty when the Johnson Administration declined to support it fully in order to remain within a $100 billion budget. Thus, Fiscal Year 1967 ultimately allocated $80 million to the AAP, compared to NASA's preliminary estimates of $450 million necessary to fund a full-scale AAP program for that year, with over $1 billion being required for FY 1968.[2] The AAP eventually led to Skylab, which absorbed much of what had been developed under Apollo Applications.