Chaparro, J., A. Sojourner & N. Huey (2019) Differential effects from access to high-quality early care. In Sustaining Early Childhood Learning Gains. Editors: A. Reynolds & J. Temple. Cambridge Univ Press: Cambridge, U.K.  
IZA  

• U.S. Treasury Department: The Economics of Child Care Supply in the United States
• Testimony to Minnesota House Early Childhood Finance and Policy Division: Investments in early childhood could prevent, close skill gaps, division hears
• IZA Newsroom (Germany): Subsidized high-quality early care improves child development especially among children in low-income families
• Federal Reserve Bank of Minneapolis: Sustaining early childhood education gains