NASA's Kuiper Airborne Observatory, 1971-1995: An Operations Retrospective with a View to SOFIA
Edwin F. Erickson and Allan W. Meyer
<a rel="nofollow" class="external free" href="https://history.arc.nasa.gov/hist_pdfs/nasasp2013-216025.pdf">https://history.arc.nasa.gov/hist_pdfs/nasasp2013-216025.pdf</a>