Early printed books, especially one printed before 1501.

[from Latin incunabula (neuter plural), ‘swaddling clothes, cradle,’ from in- ‘into’ + cunae ‘cradle.’]

Public Domain, Link

By Masherrador – Own work, GFDL, Link

By Morburre – Own work, CC BY-SA 3.0, Link

By Pietro Bernardino – Available in the BEIC digital library and uploaded in partnership with BEIC Foundation., Public Domain, Link