Federico Botana is a Postdoctoral Fellow at the University of London as part of the CULTIVATE MSS Project.Laura Cleaver is Senior Lecturer in Manuscript Studies at the University of London and Principal Investigator of the CULTIVATE MSS Project.

• List of IllustrationsList of TablesAcknowledgmentsAbbreviations"Introduction: The Value of Rare Books," by Federico Botana and Laura CleaverChapter 1: "Valuing Rare Books in 1920s Germany: Prices in Jacques Rosenthal’s Bibliotheca medii aevi manuscripta," by Angéline RaisChapter 2: "Leo S. Olschki’s Card Index and Potential Profits," by Federico BotanaChapter 3: "Stock-books and Ledgers: J. & J. Leighton and Édouard Rahir and Company ca. 1897–1904 and E. P. Goldschmid and Company ca. 1925–1933," by Laura CleaverChapter 4: "Léopold Delisle, Henri Omont, and the Price of National Collecting: The Medieval Manuscript Acquisitions of the Bibliothèque nationale ca. 1900–1910," by Hannah MorcosChapter 5: "Herschel V. Jones: Public Collections and Private Investments," by Danielle Magnusson"Conclusion," by Laura CleaverAppendix 1: InflationAppendix 2: Exchange Rates

Federico Botana is a Postdoctoral Fellow at the University of London as part of the CULTIVATE MSS Project.Laura Cleaver is Senior Lecturer in Manuscript Studies at the University of London and Principal Investigator of the CULTIVATE MSS Project.

• List of IllustrationsList of TablesAcknowledgmentsAbbreviations"Introduction: The Value of Rare Books," by Federico Botana and Laura CleaverChapter 1: "Valuing Rare Books in 1920s Germany: Prices in Jacques Rosenthal’s Bibliotheca medii aevi manuscripta," by Angéline RaisChapter 2: "Leo S. Olschki’s Card Index and Potential Profits," by Federico BotanaChapter 3: "Stock-books and Ledgers: J. & J. Leighton and Édouard Rahir and Company ca. 1897–1904 and E. P. Goldschmid and Company ca. 1925–1933," by Laura CleaverChapter 4: "Léopold Delisle, Henri Omont, and the Price of National Collecting: The Medieval Manuscript Acquisitions of the Bibliothèque nationale ca. 1900–1910," by Hannah MorcosChapter 5: "Herschel V. Jones: Public Collections and Private Investments," by Danielle Magnusson"Conclusion," by Laura CleaverAppendix 1: InflationAppendix 2: Exchange Rates

Federico Botana is a Postdoctoral Fellow at the University of London as part of the CULTIVATE MSS Project.Laura Cleaver is Senior Lecturer in Manuscript Studies at the University of London and Principal Investigator of the CULTIVATE MSS Project.

• List of IllustrationsList of TablesAcknowledgmentsAbbreviations"Introduction: The Value of Rare Books," by Federico Botana and Laura CleaverChapter 1: "Valuing Rare Books in 1920s Germany: Prices in Jacques Rosenthal’s Bibliotheca medii aevi manuscripta," by Angéline RaisChapter 2: "Leo S. Olschki’s Card Index and Potential Profits," by Federico BotanaChapter 3: "Stock-books and Ledgers: J. & J. Leighton and Édouard Rahir and Company ca. 1897–1904 and E. P. Goldschmid and Company ca. 1925–1933," by Laura CleaverChapter 4: "Léopold Delisle, Henri Omont, and the Price of National Collecting: The Medieval Manuscript Acquisitions of the Bibliothèque nationale ca. 1900–1910," by Hannah MorcosChapter 5: "Herschel V. Jones: Public Collections and Private Investments," by Danielle Magnusson"Conclusion," by Laura CleaverAppendix 1: InflationAppendix 2: Exchange Rates