It covers without significant gaps the second half of the 18th,
the 19th, and the 20th century, presenting completeness and rarity, as it has preserved the largest part of the production of the authorities at the time, while similar or equivalent material is kept in few organizations - mainly in the State Archives of the Ionian Islands.
It has been operating since 1800, and it is noteworthy that among other things, it preserves notarial codes from 1658 to 1902. (The term "code" - from the Latin word codex or condex - originally meant a book of public records, written on parchment or paper, in the format of today's book; a notary during the Frankish and Turkish rule, and later in the Ionian Islands, was a scribe < Lat. Notarius < nota sign, mark < nosco know).
Unfortunately, its collections have suffered many damages over the years. The worst, perhaps - according to G. Doika - was during the Paxos uprising against the French in 1810, during which the rebels, along with many atrocities and murders, looted the Historical Archive.
In the years that followed, the local administration did not give the importance and attention that the Archive deserved, in order to secure it a suitable shelter and to protect it from intrusive and indifferent researchers. The archivists, perhaps despite their good intentions, did not have the knowledge and experience to maintain and utilize the valuable material of the Archive. And the long periods during which it remained without an archivist, stacked in places without the appropriate humidity and temperature specifications, surely caused significant damage to its documents.