It seems you may be referring to Julia, an American television sitcom that aired from 1968 to 1971. The show was significant in Black history as it featured Diahann Carroll in the lead role, marking the first time an African American woman starred in her own TV series where she did not play a domestic worker. Julia was groundbreaking for its portrayal of a widowed nurse balancing her career and motherhood, offering a positive representation of a Black woman on television during a time when such depictions were rare. The show was praised for its progressive portrayal of race and gender roles and its impact on diversifying television programming.