The Library of Congress' Science, Technology & Business Division is excited to announce the digital collection of the credit directory "Dun's Reference Book" from 1900 to 1924!
Dun's Reference Book collection has national coverage and includes "merchants, manufacturers, and traders" in a wide range of industries from the largest cities to the smallest towns across the United States and Canada.
Researchers can use these directories to: Look up a particular company.
see a list of businesses in a particular city or town, understand the biggest industries in a community, and/or provide more context for your family tree.
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