Okay, here's another definitive statement, Jim.

Without checking for more recently discovered early broadsides there are 92 of Child's ballads that jump out at us as having their earliest version on broadside.

2,4,20,43,45,(46),54,55,56,73,74,76,81,84,(91),104,105,106,(109),110,112,116,117,120,(122), (123), (124),126-136, 138-9,141,(142),143-4,(145), 146-54, 156,157,164,(167),168-9, 199,200,(201),(209),211,213,227,233,(236),237,243,248,250,271,272,273,274,276,278,279,281,284,285,286,287,288,289,292,295,299.

Those in brackets are where the earliest version could be broadside or Percy Folio Manuscript. I'd say 'a lot' was a fair description.

Enjoyed your lighter anecdotes.