Gross worked for the Alaska Legislature, where he met Jay Hammond. He worked as special counsel on fisheries for the Alaska Department of Law before going into private practice. Hammond, who was elected Governor of Alaska in 1974, appointed Gross as his attorney general, though Hammond was a Republican and Gross was a Democrat.
Hammond explained his decision to appoint Gross by saying "Well, I think it is the obligation to appoint the best legal talent available to fill position of attorney general. And to me Av Gross is right up there at the top, even his cohorts and colleagues agree.’"[3]
As attorney general, Gross helped establish the Alaska Permanent Fund[1] and ended the practice of plea bargaining.[4] He served as attorney general until 1980, before returning to private practice.[1]