^The album's liner notes give official production credit to "Amigos de Musica." However, on original LP copies of the album (Mercury/Smash Records, catalog no. SRS 67115), an arrow pointing at a photo of Doug Sahm indicates that "Amigos de Musica is" Sahm.
^Ward, Edmund (17 May 1969). "Records". Rolling Stone. San Francisco: Straight Arrow Publishers, Inc. (33): 17.