The prompt fission neutron spectrum matrices for the n + 235-U system (u5matrx03.dat),
n + 238-U system (u8matrx02.dat), and n + 239-Pu system (pu9matrx01.dat) have been 
transformed into ENDF format and have been installed into ENDF/B-VII. A single exception
exists, however, for the thermal spectrum in the n + 235-U system. Here, the thermal 
spectrum from ENDF/B-VI (an earlier calculation using the Los Alamos model) has been 
re-installed in ENDF/B-VII. This is due to the fact that the two most recent differential 
measurements of the thermal spectrum and the most accepted set of integral cross section 
measurements in the thermal spectrum constitute three mutually incompatible experimental 
sets. This incompatibility has yet to be resolved.