I've noticed that the shape boundaries for many Minneapolis Park and Recreation Board linear parks/parkways are missing from OSM. Linden Hills Parkway is a good example. Here is the MPRB park property GIS data set, published by the City of Minneapolis through its open data platform: http://opendata.minneapolismn.gov/datasets/parks 

Does anyone know of any lists or groups covering Minneapolis I could contact about getting buy-in and help with an import of the MPRB park property boundaries that are currently missing from OSM?