[{"source_document_id":135,"title":"Spring 1909 : some new fruits","url":"https://archive.org/download/CAT31290273/CAT31290273.pdf","rights_status":"unknown","evidence_claim_count":13,"relationship_count":0,"history_event_count":0,"sample_snippets":["Stock was described as very limited this year; trees four to five feet were priced at $1.00 each or three for $2.50.","Trees offered were one year old on native plum, Prunus americana, roots.","The pit is described as very small, as shown in the page figure.","The fruit was only a trifle over 1 1/2 inches in diameter the past season, with the note that size would probably increase because the fruit came from three- or four-year-old nursery-row trees."]},{"source_document_id":2,"title":"South Dakota Fruit Garden (visual sample pages 9-11)","url":"file:///usr/local/var/www/pomologica/data/raw/manual/benchmarks/sd_fruit_garden_1943_pages_10_12.pdf","rights_status":"public_domain","evidence_claim_count":6,"relationship_count":0,"history_event_count":0,"sample_snippets":["merged across zone columns","For all zones","other","HANSEN PLUMS FOR ALL ZONES"]},{"source_document_id":112,"title":"Pollination Studies with Stone Fruits","url":"https://sherwoods-forests.com/Downloads/UMinnAgExpStation-Stone_Fruit-Pollenation.pdf","rights_status":"unknown","evidence_claim_count":5,"relationship_count":0,"history_event_count":0,"sample_snippets":["Listed in Table 12 among varieties rated as poor pollinizers for cherry-plums.","Species/background listed as P. americana x P. simonii.","Bloom season: early.","Pollinated 17 varieties tested."]},{"source_document_id":104,"title":"Northern novelties for 1921 : some new fruits, ornamentals, etc.","url":"https://archive.org/download/CAT31306465/CAT31306465.pdf","rights_status":"unknown","evidence_claim_count":2,"relationship_count":0,"history_event_count":0,"sample_snippets":["Listed as available one-year budded on sand cherry stocks.","Named among other new plums available one year old on native plum roots at the same price as Waneta."]}]