Anna Schwartz’s expertise in banking history and the compilation and analysis of monetary data was vital to their collaboration, and during the writing of The Monetary History of the United States and other works, the two exchanged drafts of chapters and manuscripts by post. Yet Anna Schwartz’s name was not included in the Nobel citation and many regretted that she did not get a share of the award. As Friedman himself admitted: “Anna did all of the work, and I got most of the recognition.”