#OTD in 1859.

German scholar Constantin von Tischendorf identifies portions of the mid-4th century Codex Sinaiticus (an uncial manuscript of the Greek Bible) at Saint Catherine's Monastery on Mount Sinai in the Khedivate of Egypt and arranges for its presentation to his patron, Tsar Alexander II of Russia at Saint Petersburg.

https://en.wikipedia.org/wiki/Codex_Sinaiticus

Tischendorf.IV.Monumenta Sacra Inedita. 1857-1870 at TIA:
https://archive.org/details/Tischendorf.iv.monumentaSacraInedita.newcollection.subscript.6vols.1857-1870/01.MonumentaSacraInedita.NCVA.FragEvangLucLibGen.v1.Tischendorf.Subsc.1857./mode/1up

#books #oldmanuscript