The term ‘transcribed’ takes on many definitions. In sheet music (the source of this type face design) it means to set down onto paper.  In the formative days of radio, and until the advent of the tape recorder, radio stations depended on 16 inch wide recordable discs known as transcriptions.
These discs were generally aluminum base with a soft lacquer coating that was cut with a heated stylus.  This was the only way a program could be recorded and preserved for later broadcast or copied for syndication.
Transcribed JNL is a hand lettered sans in the chamfer style of block lettering, based on vintage sheet music displaying the name and address for Zenith Music Publications.