Thread 9276 has good versions posted by Sandy Paton, Joe Offer, and others.
The story's the thing in this ballad. Mehlberg's www.immortalia.com may have something for the more 'purient-minded'.
Thread 9276: Matty Groves

Immortalia: immortalia

I think MMario is trying to undercut sales of the Heiman and Heiman 2nd. edition of Child.
A complete edition on the internet:
http://ling.lll.hawaii.edu/faculty/stampe/Oral-Lit/English/Child-Ballads/child.html
Child Ballads

or, at Contemplator, a good version of 'Mattie Groves' not in Child: Child
Scroll to vol. 2, # 81.