{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn04023_026.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Grand Rapids, Michigan | 1924 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"2"},{"label":"placed","value":"2"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef-snap 1, georef 1"},{"label":"key map","value":"none"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0209/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Grand Rapids, Michigan | 1924 | sanborn04023_026 p209","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:01:20Z","modified":"2026-09-22T07:01:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0209/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0209/info.json","type":"ImageService2","height":7580,"width":6408},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6408.0,7580.0 914.0,7580.0 910.7,6931.1 -0.0,6919.0 -0.0,588.9 878.5,596.9 875.4,0.0 6408.0,0.0 6408.0,7580.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0209/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.67083046276741,42.938644373120205]}},{"type":"Feature","properties":{"resourceCoords":[6408.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.66684377110113,42.938612976036225]}},{"type":"Feature","properties":{"resourceCoords":[6408.0,7580.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.66689414551318,42.935136130653746]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7580.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.67088083717947,42.935167527737725]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0239/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Grand Rapids, Michigan | 1924 | sanborn04023_026 p239","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-22T07:01:20Z","modified":"2026-09-22T07:01:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0239/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0239/info.json","type":"ImageService2","height":7616,"width":6416},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6416.0,7616.0 -0.0,7616.0 -0.0,-0.0 6416.0,0.0 6416.0,645.6 5624.5,634.2 5553.5,633.2 5521.9,6896.0 6416.0,6912.7 6416.0,7616.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114gm:g040231924:043231924-0239/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1588.0,632.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.673347,42.938385]}},{"type":"Feature","properties":{"resourceCoords":[5472.0,632.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.670886,42.938375]}}]}}]}