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| religion=​

| religion=​

| occupation= Rancher (officer of Wyoming Stockgrowers Association)

| occupation= Rancher (officer of Wyoming Stockgrowers Association)

| spouse= (1) Harriot Ann McSween Prosser (married 1940 - deceased)<br>​

| spouse= (1) Harriot Ann McSween Prosser (married 1940 - deceased)​

(2) Gloria Prieto Craw Prosser (1979-2007, his death)​

(2) Gloria Prieto Craw Prosser (1979-2007, his death)​

| children=Alden Prosser<br>​

| children=Alden Prosser<br>​

'''Dean Truxell Prosser, Jr.''' (May 10, 1917 &mydash; September 24, 2007),<ref>{{cite web|url=https://www.ancestry.com/search/?name=Dean+T._Prosser,+Jr.&event=_cheyenne-laramie-wyoming-usa_67052&birth=1917|title=Dean T. Prosser, Jr.|publisher=Ancestry.com|accessdate=September 15, 2019}}</ref> was a [[Republican Party|Republican]] member of the [[Wyoming]] House of Representatives from 1971–1983, who authored major environmental legislation He was also the executive secretary and then the executive vice-president of the influential Wyoming Stockgrowers Association from 1963 to1984. He worked thereafter with the National Cattleman's Association to establish the existing cattle import quota law.​<ref name=obit>{{cite web|url=https://www.wyomingnews.com/milestones/dean-t-prosser-jr/article_902aed06-b620-5a89-9bd9-3e1b99fb66ff.html|title=Dean T. Prosser, Jr.|publisher=''Wyoming Tribune Eagle''|date=September 27, 2007|accessdate=September 15, 2019}}</ref>

'''Dean Truxell Prosser, Jr.''' (May 10, 1917 &mydash; September 24, 2007),<ref>{{cite web|url=https://www.ancestry.com/search/?name=Dean+T._Prosser,+Jr.&event=_cheyenne-laramie-wyoming-usa_67052&birth=1917|title=Dean T. Prosser, Jr.|publisher=Ancestry.com|accessdate=September 15, 2019}}</ref> was a [[Republican Party|Republican]] member of the [[Wyoming]] House of Representatives from 1971–1983, who authored major environmental legislation He was also the executive secretary and then the executive vice-president of the influential Wyoming Stockgrowers Association from 1963 to1984. He worked thereafter with the National Cattleman's Association to establish the existing cattle import quota law.​<ref name=obit>{{cite web|url=https://www.wyomingnews.com/milestones/dean-t-prosser-jr/article_902aed06-b620-5a89-9bd9-3e1b99fb66ff.html|title=Dean T. Prosser, Jr.|publisher=''Wyoming Tribune Eagle''|date=September 27, 2007|accessdate=September 15, 2019}}</ref>

==Background==​

==Background==​

Prosser was born in [[Cheyenne]] to Dean Prosser, Sr. (1888-1958), and the former Dorothy Riner (1889–1973) and spent his early years on the family ranch in Albany County near Laramie. He attended the first six grades at the former Pumpkin Vine  School in Tie Siding, located north of the [[Colorado]] border. He then attended University Prep School and lived at Sherwood Hall in Laramie. In 1934, he graduated from Cheyenne Central High School. Thereafter in 1939, he procured a Bachelor of Science degree in business administration from the [[University of Colorado]] at Boulder.<ref name=obit/> ​

Prosser was born in [[Cheyenne]] to Dean Prosser, Sr. (1888-1958), and the former Dorothy Riner (1889–1973) and spent his early years on the family ranch in Albany County near Laramie. He attended the first six grades at the former Pumpkin Vine  School in Tie Siding, located north of the [[Colorado]] border. He then attended University Prep School and lived at Sherwood Hall in Laramie. In 1934, he graduated from Cheyenne Central High School. Thereafter in 1939, he procured a Bachelor of Science degree in business administration from the [[University of Colorado]] at Boulder.<ref name=obit/> ​

==Legislative record==​

==Legislative record==​

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Prosser served six two-year terms in the legislature under [[Governor]]s Stanley K. Hathaway, a fellow Republican, and Edgar Herschler, a [[Democratic Party |Democrat]]. He was a member of these House committees: (1) Agriculture, Public Lands and Water Resources, (2) Mines, Minerals, and Industrial Development, (3) Transportation and Highway, and (4) Rules and Procedures. The Department of Environmental Quality was established during his term as chairman of the Mines and Minerals Committee. ​

Prosser served six two-year terms in the legislature under [[Governor]]s Stanley K. Hathaway, a fellow Republican, and Edgar Herschler, a [[Democratic Party |Democrat]]. He was a member of these House committees: (1) Agriculture, Public Lands and Water Resources, (2) Mines, Minerals, and Industrial Development, (3) Transportation and Highway, and (4) Rules and Procedures. The Department of Environmental Quality was established during his term as chairman of the Mines and Minerals Committee. ​

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In addition, Chairman Prosser worked for passage of the Wyoming Mined Land Reclamation Act and the Industrial Siting Act, both laws being the backbone of state environmental protection legislation. The Mined Land Reclamation Act requires mining companies to restore disturbed areas to their natural state and was a prototype of similar legislation adopted nationally. Prosser sponsored the Wyoming Beef Council Act, which established a checkoff system to collect funds to promote the sale of beef. Representative Prosser also worked successfully to remove the [[ad valorem tax]] on livestock, which saved ranchers $6 to $10 per year per head. He also worked to improve brand inspection laws.

In addition, Chairman Prosser worked for passage of the Wyoming Mined Land Reclamation Act and the Industrial Siting Act, both laws being the backbone of state environmental protection legislation. The Mined Land Reclamation Act requires mining companies to restore disturbed areas to their natural state and was a prototype of similar legislation adopted nationally. Prosser sponsored the Wyoming Beef Council Act, which established a checkoff system to collect funds to promote the sale of beef. Representative Prosser also worked successfully to remove the [[ad valorem tax]] on livestock, which saved ranchers $6 to $10 per year per head. He also worked to improve brand inspection laws.