Chapman, PhilipHenize, Karl2018-06-292018-06-291970-01-09http://hdl.handle.net/2152.3/9515Correspondence through a United States Government Memorandum from Chapman and Henize regarding the Surveyor 3 mirror coatingUnited States Government MemorandumDr. William ThorntonSpace MedicineCorrespondenceSurveyor mirror coating