http://www.examiner.com/article/oak-cliff-nature-preserve-a-grueling-8-mile-loop-suited-for-intermediate-and-expert-mountain-bikers

http://legendsnation.com/2015/08/17/jacob-nottestad-travels-to-victory-lane/

http://theracingconnection.com/pdfs/090115.pdf

http://www.cyclingnews.com/races/wisconsin-off-road-series-wors-4-battle-of-camrock-2013/results/

http://isthmus.com/arts/sports/changes-at-madison-international-speedway/

http://hometracks.nascar.com/021015_nwaas_release_madison_joins_nascar

http://www.gazettextra.com/20160303/fuel_tires_mis_announces_schedule_nascar_heads_to_vegas