N M Beitman Most Often needed Television 1946??

[baursam]

Hi Folks

I am wondering if there was a volume published for 1946 in the Most Often Needed Television service information manuals by N M Beitman. I have 47 to 54 but am not sure if the series started in 46 or 47 for TVs. I know all of the schematics can be found in Riders manuals, its more for collection purposes. Wikipedia says they started in 46, but Wikipedia is hardly the most accurate source (citation needed). :-)

Thanks