Utah State University Extension
This fact sheet reviews which U.S. state park systems have been most, and least, cost efficient in producing outdoor recreation opportunities within their state between 1984 and 2014.
Gilbert, Lael; Smith, Jordan W.; and Leung, Yu-Fai, "Which State Park Systems Are Most Cost Efficient at Providing Outdoor Recreation Opportunities?" (2017). All Current Publications. Paper 1801.