Twight, Charlotte (1989). "The Political Economy of the National Defense Stockpile". Policy Studies Review. 8 (4): 778. doi:10.1111/j.1541-1338.1989.tb00995.x.
"1995-W Proof Silver Eagle". Silver Eagle Guide. August 21, 2009. Archived from the original on December 28, 2009. Retrieved January 10, 2010.. The 1995-W Proof Silver Eagle is considered the key to the Proof series, due to the low mintage and ability to only purchase with the Proof Gold Eagle set.
"2000 Silver Eagle". Silver Eagle Guide. December 26, 2008. Archived from the original on February 5, 2010. Retrieved March 21, 2010.
"2002 Annual Report"(PDF). United States Mint. p. 10. Archived(PDF) from the original on August 26, 2009. Retrieved March 14, 2010.
Hain-Kararakis, Phaedon (June 3, 2016). "Mint Marks | U.S. Mint". United States Mint. Archived from the original on January 17, 2022. Retrieved May 23, 2023.
"1995-W Proof Silver Eagle". Silver Eagle Guide. August 21, 2009. Archived from the original on December 28, 2009. Retrieved January 10, 2010.. The 1995-W Proof Silver Eagle is considered the key to the Proof series, due to the low mintage and ability to only purchase with the Proof Gold Eagle set.
"2000 Silver Eagle". Silver Eagle Guide. December 26, 2008. Archived from the original on February 5, 2010. Retrieved March 21, 2010.
Hain-Kararakis, Phaedon (June 3, 2016). "Mint Marks | U.S. Mint". United States Mint. Archived from the original on January 17, 2022. Retrieved May 23, 2023.