This interesting TV Program from 1987 The Computer Chronicles – Super Computers Episode Has information about NASA Ames Cray-2 and Los Alamos C1 & XMP.
Shows the systems in there working environment along with explanations as to how the Cray systems are advancing science.
About 30 Minutes – First part on NAS Ames Cray 2 then onto Superconductors at Berkeley briefly showing an XMP. Third part features the work done at Los Alamos with views across the computer hall and explanation as to the types of simulations performed.