cunabula
Cu*nab"u*la (k-nb"-l), n. pl. Etym: [L., a cradle, earliest abode, fr. cunae cradle.] 1. The earliest abode; original dwelling place; originals; as, the cunabula of the human race. 2. (Bibliography) Defn: The extant copies of the first or earliest printed books, or of such as were printed in the 15th century.