cunabula
Webster's Dictionary (GCIDE)
Cunabula \Cu*nab"u*la\ (k[-u]*n[a^]b"[-u]*l[.a]), n. pl. [L., a cradle, earliest abode, fr. cunae cradle.]
1.The earliest abode; original dwelling place; originals; as, the cunabula of the human race. [1913 Webster]
2.(Bibliography) The extant copies of the first or earliest printed books, or of such as were printed in the 15th century. [1913 Webster]