This collection consists of approximately 1,000 parchments dating from the 12th to the 21st centuries, of diverse origins and types, including a sales contract dated 1119, which is currently the oldest document in the AGA.

It is the most important and abundant collection of the Augustinian General Archive. It consists of 15 series:

• Aa: News related to the Provinces, Congregations, and Convents of the Order. It comprises 103 archival units.
• Bb: Records of the Order’s Attorneys General. It comprises 110 archival units.
• Cc: Miscellaneous (collections of letters, treatises, books, news items, visit records, writings, and other materials). It comprises 129 archival items.   
• Dd: Records of the Priors General. Consists of 289 archival units.
• Ee: News of the beatification of our saints. This series is currently managed by the Office of the General Postulation of the Order.
• Ff: Chapter minutes from all the Provinces and Congregations of the Order. It comprises 93 archival units.
• Gg: Inventories of Mass celebrations. Includes 12 archival units.
• Hh: Original bulls. This series, which is highly significant and important for the history of the Order, consists of a considerable number of parchments that have been restored, studied, and published in the *Bullarium Ordinis Sancti Augustini* by Fr. Carlos Alonso, O.S.A.
• II: Financial reports of various convents. Within this series, the collection of reports from Italian convents dating from 1650—known as the Innocentian Reports—stands out. These reports are frequently consulted by various researchers and, as their name suggests, are the result of an express request made by Pope Innocent X to the major superiors of religious institutes to visit and report on the condition of the various convents within their communities. It comprises approximately 60 archival units.
• Kk: Student records, including enrollment records, reports, financial aid documents, and other materials. It comprises 27 archival units.
• Ll: Incoming and outgoing books of Father General's depository. It includes 13 archival units.
• Mm: Incoming and outgoing records of the Angélica Library. Consists of 7 archival units.
• No.: Boxed sets of books on our religion. It contains 75 archival units.
• Oo: Archives of the Roman Province, consisting mainly of inventories and minutes. It comprises 16 archival units.
• Subject: Sisters of the contemplative and active life. It comprises 41 archival units.

This collection is made up of 23 very scattered and fragmented series, since a large part of the Convent's documentation is in the State Archives in Rome. It comprises about 100 archival units.

• A: Inventories, catalogs and price reductions of trade shows
• B: Campioni o bilanci
• C: Original images and copies
• D: Libri di ricevute
• E: Libri per le Doti
• F: Positions and various news
• G: Giornali e liste delle Funzione fatte in Curia
• H: Libri delle proposte
• I: Entrata ed esito del deposito del convento
• K: Entrata ed esito dei depositi dei religiosi o sia vestiarii e onorarii
• L: Inventarii delle suppellettili del convento e della chiesa.
• M: Interessi spettanti alla Casa Ghirlandari
• N: Interessi spettanti ai Signori di Casa Pegni
• O: Entry journals
• Q: Giornali dell'esito
• Q: Entrata ed esito del refettorio, forno, ogliaro, cantina, pane e infermeria.
• A: Libri dell'entrata dell'entrata ed esito delle vigne
• S: Libri dei rappezzi e fabbriche delle case e del convento
• T: Conti saldati dei muratori, ferrai, falegnami ed altri artisti.
• V: Libri appartenenti alla nostra parrocchia
• X: Libri d'entrata ed esito della cappellania di S. Monica e dell'eredità Ghirlandari
• Y: Entrata ed esito della sagrestia
• aa: Documenti diversi

The Archives of the Congregation of Lombardy and the Convent of Santa Maria del Popolo were transferred to the General Archives of the Order when the Congregation disappeared in 1912. It is worth noting that the Convent of Santa Maria del Popolo was the seat of the Procurator General of the Lombardy Congregation before the Roman Curia. It comprises 174 archival units.

SOTTOFONDO CONGREGAZIONE LOMBARDA

• Les chroniques.
• Première série.
• Deuxième série.
• Third series.
• Quatrième série.

SOTTOFONDO CONVENT S. MARIA DEL POPOLO

• Libri proprietatum conventus S. Mariae de Populo.
• Libri di ricevute.
• Libri instrumentorum seu Catastra.
• M: Miscellanea.

• Cardinal Agostino Ciasca, O.S.A. [c. 1880–1902]
• Fr. Saturnino López, O.S.A. [c. 1916–1944]: This collection contains approximately 70 archival items comprising the documents produced and compiled by this Spanish Augustinian friar, who took a special interest in the history of the Order, approaching it primarily through his study of the Order’s Bulario.
• Fr. Eelcko Ypma, O.S.A. [c. 1950–1995]: This collection consists of 11 archival units containing part of the documentary material gathered by this Augustinian friar, who had a special interest in the history of the Order of Saint Augustine in France.
• Sebastiano Cardinal Martinelli, O.S.A. [c. 1900–1918]
• Fr. Antonio Casamassa, O.S.A. [c. 1926–1955]
• His Excellency Monsignor Agostino Felice Addeo, O.S.A. [c. 1913–1957]
• His Excellency Bishop Pietro Canisio Van Lierde, O.S.A. [c. 1937–1992]
• Fr. Francis Xavier Martin, O.S.A. [c. 1958–1979]
• Prosper Card. Grech, O.S.A. [2011–2015]: This collection contains five archival units that bring together part of the documentation related to this member of the Order—a biblical scholar, longtime professor, writer, and one of the founders of the Augustinian Patristic Institute in Rome—who was appointed a cardinal by Pope Benedict XVI.
• Sister Agnese Carandente, O.S.A. [c. 1960–2023]

Comprising approximately 100 archival items dating from 1882 to 2013, this collection contains various documents related to student records, minutes of local community meetings, attendance logs, mass registers, and family registers, among other materials, from this institution, which has served as both a center of governance and a general house of studies in the city of Rome.

The Augustinian General Archives holds various materials that represent a patrimonial and historical value for the Order. Among these materials we can highlight the following collections:

• The Rocca Letters: This is a private and quite interesting collection held at the AGA; it consists of 126 descriptions of cities in southern Italy and 33 city plans or maps, a project undertaken at the initiative of the Augustinian friar Angelo Rocca, on the occasion of the journey undertaken between 1583 and 1584 with Prior General Spirito Anguissola for the canonical visitation of the Augustinian convents in southern Italy. 
• Library of the Order's History: Manuscripts, incunabula, liturgical books, breviaries, constitutions, ritual books, choir books, and other works related to the history of the Order and its circumscriptions.
• Archives: Official bulletins, scientific publications, and periodicals from the General Curia and its agencies, as well as from the Order’s circumscriptions.
• Photo Archive: A substantial and significant collection of photographs that serves as an important source for the history and legacy of the Order and its various districts and communities.
• Audiovisual: Slides, films, magnetic tapes, video, VHS, DVD.
• Stamps and coins: A substantial collection of coins and medals.
• Map Collection: Collection of plans and maps of some convents and cities preserved in the Archive.
• Miscellaneous: Collection of distinctions, mentions and other curious objects.