This bibliography lists all entries from the Jean Piaget Archives Catalogues dealing with mental retardation. The list, including almost 200 entries, encompasses four works by Piaget himself, one collaboration, and 189 works by other authors. Entries are arranged in order by their publication in one of the 12 catalogues of the archives, providing a roughly chronological approach. The list includes primarily items in English, with some in French, German, Italian, and Spanish. Each entry is identified by a key word to aid searches for specific subjects. Key words include, among others: assessment, cognitive development, concept identification, concept of number, concept of space, conservation, education, imitation, memory, moral judgment, parents, pathology, perception, play, problem-solving, reasoning, sensorimotor development, stimulation, and symbolic play. (JDD)