"Local and General News". Honolulu, Hawaiian Islands: The Independent. February 10, 1903. Diakses tanggal December 22, 2016 – via Chronicling America: Historic American Newspapers. Lib. of Congress.
"W. N. Armstrong Dies at Seventy". Honolulu, Oahu, Hawaii: The Evening Bulletin. October 16, 1905. hlm. 1, 8. Diakses tanggal December 22, 2016 – via Chronicling America: Historic American Newspapers. Lib. of Congress.; "Death of a Kamaaina". Honolulu, Hawaiian Islands: The Pacific Commercial Advertiser. October 17, 1905. hlm. 1, 2. Diakses tanggal December 22, 2016 – via Chronicling America: Historic American Newspapers. Lib. of Congress.
"W. N. Armstrong Dies at Seventy". Honolulu, Oahu, Hawaii: The Evening Bulletin. October 16, 1905. hlm. 1, 8. Diakses tanggal December 22, 2016 – via Chronicling America: Historic American Newspapers. Lib. of Congress.; "Death of a Kamaaina". Honolulu, Hawaiian Islands: The Pacific Commercial Advertiser. October 17, 1905. hlm. 1, 2. Diakses tanggal December 22, 2016 – via Chronicling America: Historic American Newspapers. Lib. of Congress.
"Armstrong's Ashes Arrived". Honolulu, Hawaiian Islands: The Pacific Commercial Advertiser. December 23, 1905. hlm. 6. Diakses tanggal December 22, 2016 – via Chronicling America: Historic American Newspapers. Lib. of Congress.; "Mr. Armstrong Had Disease of the Liver". Honolulu, Hawaiian Islands: The Pacific Commercial Advertiser. October 26, 1905. hlm. 1. Diakses tanggal December 22, 2016 – via Chronicling America: Historic American Newspapers. Lib. of Congress.