This repository contains the dataset of the article "Towards a general open dataset and models for late medieval Castilian writing (HTR/OCR)" submitted to the Journal of Data Mining and Digital Humanities (JDMDH). I refer to the paper (arXiv) for the description of the corpus and the models. The image of the manuscript M (Esc_M) has not yet been uploaded, pending permission from the library that keeps the manuscript. All images are kept in a directory named after the place where the manuscript is kept, and the sigla of the witness for the in-domain dataset. The global licence for the dataset (except for images) is CC-BY-NC-SA. All manuscripts reproductions are published with the authorization of the libraries. ©Biblioteca General Histórica de Salamanca Universidad de Salamanca (España), Biblioteca General Histórica, Ms. 2709 (L) Universidad de Salamanca (España), Biblioteca General Histórica, Ms. 2097 (J) Universidad de Salamanca (España), Biblioteca General Histórica, Ms. 2673 Universidad de Salamanca (España), Biblioteca General Histórica, Ms. 2011 Universidad de Salamanca (España), Biblioteca General Histórica, Ms. 2654 Universidad de Salamanca (España), Biblioteca General Histórica, Ms. 2086 ©Museo Lázaro Galdiano. Madrid Inv. 15304, Fundación Lázaro Galdiano (A) ©Universidad de Valladolid Ms. 251, Biblioteca Santa Cruz (S) ©Real Biblioteca del Escorial Ms. K.I.5, Biblioteca del Real Monasterio del Escorial (Q) Ms. h.I.8, Biblioteca del Real Monasterio del Escorial (M): to be published Ms. Z-I-12 Ms.Z-III-9 Ms. X-III-4 Ms. h-III-9 Ms. b-IV-15 Ms. b-II-11 Ms. a-II-17 Ms. T-III-5 ©Rosenbach Foundation Ms. 482/2 (U) © Gallica.bnf.fr Espagnol 12 Espagnol 36 Espagnol 218 © Bodleian Library Ms. Span. d. 1 Ms. Span. d. 2/1 © Biblioteca Real, Madrid Ms. II/215 © Biblioteca Nacional de España Mss/4183 Inc/901 (Z) © Biblioteca Universitaria, Sevilla Ms. 332/131