References

Met WWC evidence standards

Phillips, L. M., Norris, S. P., Mason, J. M., & Kerr, B. M. (1990). Effect of early literacy intervention on kindergarten achievement (Tech. Rep. No. 520). Champaign: University of Illinois at Urbana-Champaign, Center for the Study of Reading.

Did not meet WWC evidence screens

McCormick, C. E., & Mason, J. M. (1989). Fostering reading for Head Start children with Little Books. In J. Allen & J. M. Mason (Eds.), Risk makers, risk takers, risk breakers: Reducing the risks for young literacy learners (pp. 154–177). Portsmouth, NH: Heinemann. ⁷

Additional source:
McCormick, C. E., & Mason, J. M. (1986). Use of Little Books at home: A minimal intervention strategy that fosters early reading (Tech. Rep. No. 338). Champaign: University of Illinois at Urbana-Champaign, Center for the Study of Reading. (ERIC Document Reproduction Service No. ED314742)