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| Field | Data format | Obligation | Definition | Notes |
|---|---|---|---|---|
| Name | markdown | Recommended | Name or brief caption describing the source. | Maximum length: 140 characters Example: "Diary of Major George Washington, 1753" |
| DPLA id | text | Required | The DPLA aggregation representing the source. | Example: "ebc07432a6ba4f864daaddc4ad0a68f9" |
| Media type | choose one from menu | Required | The format in which the full representation of the source is encoded. Media type refers to the file type of the digital object. It is not a description of the original object. | |
| Citation | markdown | Recommended | A bibliographic citation for the the source. | Example: Washington, George. *The Journal of Major George Washington.*Chicago: The Newberry Library, 1958: page 53. |
| Credits | markdown | Recommended | A statement crediting the hub and contributing institution. | Example: "Courtesy of The University of Michigan via Hathitrust" |
| Textual content | markdown | Optional | Narrative description, transcription, citation, or other text describing the source. |
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