Lasher, Bobbi. [Letter from Florida Space Port to Helen Snapp, April 3, 1997], letter, April 3, 1997; (https://texashistory.unt.edu/ark:/67531/metapth877435/m1/1/: accessed April 3, 2020), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .