[{"source_document_id":7,"title":"Minnesota #1695","url":"https://conservancy.umn.edu/server/api/core/bitstreams/891e96c2-d751-4fea-9f35-51fec97c7043/content","rights_status":"unknown","evidence_claim_count":20,"relationship_count":0,"history_event_count":0,"sample_snippets":["For 'Superior' in Table 2: Initial (0 months) 86% (B-F), 1 month 78% (C), 2 months 78% (BC), 3 months 72% (H), 4 months 62% (G), 5 months 66% (CD), 6 months 56% (H), 7 months 53% (G), 8 months 56% (H), 9 months 49% (J).","Collection week is shown as Week 17.","Source citation given as Brooks and Olmo, 1997.","Introduction year listed as 1933."]},{"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":15,"relationship_count":0,"history_event_count":0,"sample_snippets":["Included among sturdy, vigorous trees and plants grown by the Minnesota Fruit Breeding Farm.","Offered as one of the free membership premium choices for 1937.","Listed under the Plum Trees section.","Supply noted as limited; readers are told to order early."]},{"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":11,"relationship_count":0,"history_event_count":0,"sample_snippets":["Listed as the plum cultivar in row 4 of the recommended orchard arrangement.","Listed in Table 12 among varieties rated as poor pollinizers for cherry-plums.","The page suggests Superior may not be fully winter hardy in northern Minnesota.","Table 9 lists Superior among suggested plum varieties for planting."]},{"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":["ZONE II Counties in Minne-sota that have North Slopes & Valleys of General Prairie","{\"column_label\": \"ZONE II Counties in Minne-sota that have North Slopes & Valleys of General Prairie\", \"cultivar_name\": \"Superior\", \"notes\": [], \"page_number\": 1, \"parser_mode\": \"visual_table_page\", \"row_context\": null, ","ZONE I Southern Border, Lincoln Co., West & lower Valleys around Black Hills","PLUMS, Minn. Hybrids"]},{"source_document_id":106,"title":"Daniels planting guide, 1950","url":"https://archive.org/download/CAT31385782/CAT31385782.pdf","rights_status":"unknown","evidence_claim_count":6,"relationship_count":0,"history_event_count":0,"sample_snippets":["Said to have proven itself worthy of its name and to be one of the finest of all the plums.","Productivity is specifically praised.","Fruit is described as having good red color.","Flavor, good red color, texture, size, and productivity are all praised."]},{"source_document_id":139,"title":"Planting time, 1950 / Alpha Nursery","url":"https://archive.org/download/CAT31385295/CAT31385295.pdf","rights_status":"unknown","evidence_claim_count":6,"relationship_count":0,"history_event_count":0,"sample_snippets":["Fruit ripens over a long period.","Described as a heavy yielder.","Described as very large.","Described as juicy and sweet."]}]