Need an exact description (blue prints ?) of the Lunar Laserreflectors left by Apollo.

Folks:

I am looking for an exact description of the different US LRRR
experiments left on the moon. While I can find pictures and attendant
science papers on how they were used them afterwards ( I even talked
to a guy at McDonald Observatory), I am really interested in the
equivalent of a blueprint with exact dimensions of these reflectors.
While culling through NTIS, I came across some reports (like apollo
lunar surface experiment package CR 114901), ordered them but still
cannot find an exact mechanical description of them. The CDRs for the
LRRR for Apollo 14 looks like it is a bunch of minutes (try to find
that through NTIS) so I am a little lost as to where to start. Can
somebody provide me a hint / document number where I could find these
?

I know I am on a fishing trip and a long one at that.

Thanks in advance,

Igor Carron.