Resources for selecting high-quality elementary science trade books include lists exclusively for science and those that contain a broad spectrum of content foci such as the IRA's "Teachers' Choices" list. In this study, the genres and content areas of science-based "Teachers' Choices" books from the list's inception in 1988 through 2004 were analyzed for trends. Based on our analysis, the storybook genre has decreased while informational books, particularly those classified as non-narrative informational books (Donovan & Smolkin, 2002), showed marked increases. Life science was the most prevalent content area. The implications of this increase in informational books are discussed in terms of integrating science and literacy. (Contains 1 table.)