In 1973, Stellweg and Fernando Gamboa, director of the
Museo de Arte Moderno (MAM) in Mexico City co-founded
Artes Visuales, the first contemporary avant-garde visual arts magazine publication in Spanish and English in Latin America. In 1976, Stellweg devoted an issue of
Artes Visuales covering the participation of women in the arts. Mexican-based artists and critics did not accept the concept of a feminist based movement, fearing that adoption of a feminist strategy would have negative repercussions. In 1979 Stellweg became the deputy director of the newly built
Rufino Tamayo Museum, but within a short time, moved to
New York City. From 1983 to 1985, she was the co-owner and director of the Stellweg-Seguy Gallery, She became the chief curator of the
Museum of Contemporary Hispanic Art (MOCHA) in 1986, and left in 1989 to found her own gallery. The Carla Stellweg Gallery operated from 1989 to 1997 and was located in New York City and focused on emerging as well as mid-career Latin American and Latino artists of various media. Prior to Blue Star, Stellweg was awarded a Rockefeller Fellowship in the Humanities at the UT Austin, Texas, where she conducted research leading to,
If Money Talks Who Does the Exhibition Talking?: 1980s Latin American and Latino Art. Stellweg acted as an independent consultant, including a project entitled
Hispanic Art in the United States: Thirty Contemporary Painters and Sculptors and The Latin American Spirit: Art and Artists in the US, 1920-1970, and has authored numerous publications. Stellweg died in
Cuernavaca on 20 October 2025. ==Selected works==