The Del-Tears/Deltairs are a different group than the Ivy Deltairs.  According to Marv Goldberg both groups worked with Al Browne’s Orchestra.

Del-Tears (w Al Browne’s Orch) – There He Goes/ Whoever You Are (Ray Born 132-133) (#132 scan found.)

Del-Tears as Deltairs (w Al Browne’s Orch) – Whoever You Are/ There He Goes, ’73 (Vintage 1005)