[78-L] MJ Party Records

[Clifford Bolling]

Just got a group of 10 'party records' from an estate sale today, all with matrix numbers beginning with MJ- followed by a 3 digit number beginning with a 2.  All the labels have the routine name stamped or printed on them, some of the labels are white and others are yellow.  The yellow labels also have the matrix numbers printed on them.  Some are 2 part stories with part 1 on one side and Part 2 on the other.
 
You can listen to the routines here:
 
http://pdx78s.cdbpdx.com/MIJ5/
 
These are not very raunchy by today's standards, though they must have caused a few chuckles when they were made.
 
I looked on the 'Blue Pages' but the 'Titles' link isn't working, went through the 'Artists' link and searched for
a few titles with no luck.  Anybody recognize this group?  What does MJ stand for?
 
Thanks!
 
CDB