Dr.Welsing spent nearly twenty-five years working as a staff physician for D.C.’s Department of Human Services, and also as the clinical director of two schools catering to children with emotional troubles. Welsing opened her own private practice in D.C. in 1967. While Welsing was an assistant professor at Howard University she formulated her first body of work in 1969, The Cress Theory of Color-Confrontation and self-published it in 1970.[5] The paper subsequently appeared in the May 1974 edition of The Black Scholar. This was an introduction to her thoughts that would be developed in The Isis Papers