It is the oldest preserved Valencian paper document and the oldest judicial document of the Kingdom of Valencia. It is a notebook of 32 handwritten folios by at least three different scribes and three languages (Latin, Aragonese and Catalan).

About 18 documents written in full or partially in Arabic are preserved, the majority (about 14) from the Court of Justice, while the remaining four belong to a private fund. The letters are dated between 1517 and 1580 and refer to the correspondence between the justice of Alcoi and the Moorish authorities of Benilloba.

Volume of 819 pages that began to be written in 1669 and is an inexhaustible source for local historiography: toponymy, town planning, oligarchies, properties,..., It is one of the documentary funds used by the Valencian Language Academy for in the Valencian Historical Toponymic Corpus.

 Written before the justice of Alcoi to record the "miraculous" appearance of an image of the Virgin Mary in some lilies at the Font Roja.

 At the beginning of 1844, Alcoy became provisionally the capital of the province of Alicante by hosting the Provincial Council following the liberal rebellion of Pantaleó Boné. The local authorities, seizing the opportunity, asked the government to make Alcoy the provincial capital permanently without success. Perhaps as compensation the government of Isabel II rewarded the population by royal decree of February 28, 1844 with the concession of the title of "city"

It occupies almost 30,000 folios and constitutes the largest documentary source for the study of one of the most important workers' revolts in history, cited by Marx and Engels.

In the middle of the Civil War, the lack of fractional currency forced the local Council to issue paper currency guaranteed by a deposit of State paper. The Archive also keeps 2 lithographic plates with which the 1 pta banknotes were printed. and 25 cts.