English-Spanish cognates are words that are spelled similarly or identically and possess the same or nearly the same meanings in both languages. Many cognates are academic vocabulary words and are very common in content area textbooks. The primary purpose of this investigation was to obtain an estimate of the number of different cognates in picture books. Two studies of picture books were conducted to determine their English-Spanish cognate content. Both studies found significant numbers of cognates in the picture books. Furthermore, it was found that trade books written in Spanish contained more unique cognates than those written in English. Finally, a free online database of the picture books and their cognates was presented.