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Main Authors: Cargnelutti, Matteo, Brobston, Catherine, Hess, John, Cushman, Jack, Mukk, Kristi, Scourtas, Aristana, Courtney, Kyle, Leppert, Greg, Watson, Amanda, Whitehead, Martha, Zittrain, Jonathan
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2506.08300
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author Cargnelutti, Matteo
Brobston, Catherine
Hess, John
Cushman, Jack
Mukk, Kristi
Scourtas, Aristana
Courtney, Kyle
Leppert, Greg
Watson, Amanda
Whitehead, Martha
Zittrain, Jonathan
author_facet Cargnelutti, Matteo
Brobston, Catherine
Hess, John
Cushman, Jack
Mukk, Kristi
Scourtas, Aristana
Courtney, Kyle
Leppert, Greg
Watson, Amanda
Whitehead, Martha
Zittrain, Jonathan
contents Large language models (LLMs) use data to learn about the world in order to produce meaningful correlations and predictions. As such, the nature, scale, quality, and diversity of the datasets used to train these models, or to support their work at inference time, have a direct impact on their quality. The rapid development and adoption of LLMs of varying quality has brought into focus the scarcity of publicly available, high-quality training data and revealed an urgent need to ground the stewardship of these datasets in sustainable practices with clear provenance chains. To that end, this technical report introduces Institutional Books 1.0, a large collection of public domain books originally digitized through Harvard Library's participation in the Google Books project, beginning in 2006. Working with Harvard Library, we extracted, analyzed, and processed these volumes into an extensively-documented dataset of historic texts. This analysis covers the entirety of Harvard Library's collection scanned as part of that project, originally spanning 1,075,899 volumes written in over 250 different languages for a total of approximately 250 billion tokens. As part of this initial release, the OCR-extracted text (original and post-processed) as well as the metadata (bibliographic, source, and generated) of the 983,004 volumes, or 242B tokens, identified as being in the public domain have been made available. This report describes this project's goals and methods as well as the results of the analyses we performed, all in service of making this historical collection more accessible and easier for humans and machines alike to filter, read and use.
format Preprint
id arxiv_https___arxiv_org_abs_2506_08300
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Institutional Books 1.0: A 242B token dataset from Harvard Library's collections, refined for accuracy and usability
Cargnelutti, Matteo
Brobston, Catherine
Hess, John
Cushman, Jack
Mukk, Kristi
Scourtas, Aristana
Courtney, Kyle
Leppert, Greg
Watson, Amanda
Whitehead, Martha
Zittrain, Jonathan
Computation and Language
Digital Libraries
Large language models (LLMs) use data to learn about the world in order to produce meaningful correlations and predictions. As such, the nature, scale, quality, and diversity of the datasets used to train these models, or to support their work at inference time, have a direct impact on their quality. The rapid development and adoption of LLMs of varying quality has brought into focus the scarcity of publicly available, high-quality training data and revealed an urgent need to ground the stewardship of these datasets in sustainable practices with clear provenance chains. To that end, this technical report introduces Institutional Books 1.0, a large collection of public domain books originally digitized through Harvard Library's participation in the Google Books project, beginning in 2006. Working with Harvard Library, we extracted, analyzed, and processed these volumes into an extensively-documented dataset of historic texts. This analysis covers the entirety of Harvard Library's collection scanned as part of that project, originally spanning 1,075,899 volumes written in over 250 different languages for a total of approximately 250 billion tokens. As part of this initial release, the OCR-extracted text (original and post-processed) as well as the metadata (bibliographic, source, and generated) of the 983,004 volumes, or 242B tokens, identified as being in the public domain have been made available. This report describes this project's goals and methods as well as the results of the analyses we performed, all in service of making this historical collection more accessible and easier for humans and machines alike to filter, read and use.
title Institutional Books 1.0: A 242B token dataset from Harvard Library's collections, refined for accuracy and usability
topic Computation and Language
Digital Libraries
url https://arxiv.org/abs/2506.08300