[{"source_document_id":105,"title":"Hardy fruits for Northern planting, trees, shrubs, 1937","url":"https://archive.org/download/CAT31349771/CAT31349771.pdf","rights_status":"unknown","evidence_claim_count":13,"relationship_count":0,"history_event_count":0,"sample_snippets":["A photo on the page is captioned Potomac.","Prices for Potomac are referenced on page 8.","The catalog states that to its knowledge Potomac has never shown any traces of mosaic.","Potomac is said to be exceptionally resistant to anthracnose."]}]