Digital technologies have expanded access to a wealth of resources stored in archives. But authenticating, describing, and indexing these resources requires painstaking work. Most cultural institutions (e.g., museums and libraries) lack the financial resources and workforce to optimize searchability and readability of digitized records, which limits their use as data sources. Consequently, digital history archives have reached out to the public and engaged the online community's participation in tagging, classifying, transcribing, and organizing content. These crowdsourcing projects are transforming and democratizing access to historical records. Recent crowdsourcing projects have not only benefited cultural heritage collections but also demonstrated value to students as part of their social studies learning. Crowdsourcing projects give students the opportunity to examine historical records from a new perspective. These projects shift the focus from students as consumers of digital collections to collaborators in the development and enhancement of these information resources. Students gain insight into the process of discovery and conservation of cultural heritage. As students contribute to these projects, they become more aware of the significance of artifacts and documents as the data of historians. They gain an understanding of how historians analyze and interpret data and by extension how our knowledge of history is constructed.