This data set encompasses 101 transcriptions of digital images of dated medieval manuscripts The original data set was created as part of the ANR ORIFLAMMS (ANR-12-CORP-0010) project. Texts were transcribed by Irene Ceccherini in the original TEI-XML format, rendering both abbreviated and expanded forms of the original text. The transcriptions were revised at the end of the project by Dominique Stutzmann, and the alignement data was produced by merging coordinates created through the Oriflamms software and coordinates produced by A2IA for words, and corrected at word level by Dominique Stutzmann. A new version was prepared in March 2022 as part of the research for a joint paper on HTR diversity for the DH 2022 conference (Tokyo). In particular, (1) the coordinates of lines were corrected through a complete new layout segmetation with the Transkribus software; (2) several ALTO files were generated with different versions of the edited text (normalized or not normalized / abbreviations expanded or not). Folders The present data set gathers different folders with different types of information. The folder schema and file format used in the ORIFLAMMS is described in: Consortium Oriflamms. « Spécification du format XML-TEI pour l’alignement texte-image. 1. Structure et convention de nommage ». *Écriture médiévale & numérique*, 11 Sept. 2016. [http://oriflamms.hypotheses.org/1442]. Consortium Oriflamms. « Spécification du format XML-TEI pour l’alignement texte-image. 2. Bonnes pratiques d’encodage ». *Écriture médiévale & numérique*, 12 Sept. 2016. [http://oriflamms.hypotheses.org/1510]. img Folder with 101 images. These images are scans of actual printed photographs at scale. The source of the photograph, i.e. the shelfmark of the medieval manuscript and the folio number, is handwritten on the picture. It is also formalized as TEI <msIdentifier/> element in the files of the /texts/ folder. These images are also integrated in the BVMM (Bibliothèque Virtuelle des Manuscrits Médiévaux) as IIIF compliant images. texts Original TEI-XML edition with identifiers for all paragraphs, lines, words in the `texts/mss-dates-w.xml` file, and also for characters in the `mss-dates-c.xml` file. The additional file named `texts/mss-dates-w-merged.xml` does not correspond to the ORIFLAMMS specification. It is a XML-TEI file with the same structure as `mss-dates-w.xml` but with following additions: the zones coordinates are integrated in a `<facsimile/>` element within each concerned `<TEI/>` element; the `@xml:id` attributes within `<milestone/>` elements are renamed to avoid multiple occurrences; he `<lb/>` and `<w/>` elements are enhanced with a `@facs` attribute pointing to the corresponding `<zone/>` element; the `<w/>` elements are enhanced with a `@corresp` attribute containing the string value of the word without expansion nor normalization. /zones/, /img_links/ zones described as coordinates on the images (/img/ folder) and files linking between the edition in /texts/ folder and coordinates in the /zones/ folder. /ontologies/, /ontologies_link/, /oriflamms/ Here, folders are present, but the data is not created. /alto/ ALTO files were created from the preexisting TEI files and combine the coordinates and the text in single files where the text is flat and rendered at a line level, with/without normalization and with/without abbrevations.