RCA

All of the RCA records that are within the scope of this documentation are primarily on a black
label with a dog at the top.  Most are machine stamped in the dead wax.  A variation worth noting
is the addition of a pair of horizontal silver lines added to some releases.  These are merely variations,
although they are usually worth a little more than their counterparts without the lines.  The first three
reproductions listed below were released in 1951 on the blue/green label that preceded the black
label.  This label should not be confused with the green label used by RCA for country records.  The
record number on the country label was prefixed with the number 48.  The releases described here
were prefixed with 47.  The early gray label carried a 50 prefix.