title: [Trading Card: Great Blue Heron] title: Texas State Parks GeoCache Challenge Cards creator: Texas. Parks and Wildlife Department. publisher: Texas. Parks and Wildlife Department. date: 2011 language: English description: Trading card issued as part of the Geocache Challenge program for Ray Roberts Lake State Park - Johnson Branch Unit, depicting a great blue heron. The back of the card contains information about the species. subject: Landscape and Nature - Wildlife subject: Landscape and Nature - State and National Parks subject: trading cards subject: geocaching subject: Parks -- Texas. subject: Animals -- Texas. subject: Ardea herodias subject: birds subject: herons subject: Ray Roberts Lake State Park coverage: Into Modern Times, 1939-Present coverage: United States - Texas - Cooke County type: Text format: 1 card : col. ill. ; 10 x 7 cm. format: Text identifier: oclc: 769445672 identifier: govno: P400.8 G29CA identifier: https://texashistory.unt.edu./ark:/67531/metapth662072/ identifier: ark: ark:/67531/metapth662072