Middlesex Modelers Mountain View Park 40.584547, -74.497604Gifford Field Bridgeton NJ 40°35'04.4"N 74°29'51.4"WMM
The Wichihawks fly at Planeview Park in Wichita, KS, 37°38'22.8"N 97°16'52.1"W.Gary
Mid Iowa Control Liners, Brett Smith Memorial C/L site -- Big Creek State Park, Polk City, Iowa@41.8017831,-93.733146You can search on Google maps for "Mid Iowa Control Liners Flying Site".Site is Control Line only (no RC or Free Flight). Not limited to any group or club. Two grass circles with concrete center pads.
Latitude: 35.31052 | Longitude: -89.920034
One minor nitpick - the location you show for the Chicagoland Circle Cutters (Illinois)is actually located on the adjacent RC flying field of the Chicagoland RC Modelers Inc.The proper location is 42.046747, -88.019806 which is the center of circle #1
A couple more cl flying sites that I fly atRamsey Model club's own flying site 52°23'51.16"N 0° 6'9.47"WOld Warden airfield - shared with fullsize vintage aircraft (shuttleworth trust) 52° 5'23.48"N 0°19'20.10"WImpington Village College Model Aero Club (school playing field) 52°14'41.83"N 0° 7'1.20"ESlip End playing field, home of the Chiltern Flyers (a controline only club) 51°51'30.34"N 0°25'50.46"W
That map is starting to fill out nicely, Fred. Thanks for providing this service to us semi-obscure hobbyists who are forever wondering where we can fly.Rusty
Here's a couple more I know of in the USA Midwest for you Fred:Omaha Orbiting Eagles1 paved, 2 grassSeymour Smith ParkOmaha, NE41.197661, -96.020726F-M Skylarks2 paved, 1 grassFargo, ND 5810246.892223, -96.772331