The band have collaborated on numerous songs recorded by other artists throughout their career,[27] including: Don has worked extensively with Lancaster-based singer-songwriter Denison Witmer, and was first credited as an engineer on his debut release, 1995's My Luck, My Love.
He also engineered the LPs Of Sorrow and Joy (2001) and Recovered (2003), and mixed The '80s EP (2000) and Philadelphia Songs (2004).
The latter album additionally features background vocals from Karen, on the song "Rock Run".
Don also produced the 2003 charity album Poverty, Chastity, Obedience: Remembering Father Mychal F. Judge, O.F.M., and was credited as the mastering engineer for two EPs released by The Ocean Blue: Denmark (2000) and Ayn (2001).
[27] Mike Bitts and Steve Brown were both credited with performing bass guitar and drums, respectively, on several songs from Better Living Through Compression,[27] a 2004 album by The Innocence Mission's former guitar technician Cliff Hillis.