1920 United States Federal Census. Washington, DC: United States Census Bureau. 1920. "Rudolph Wanderon" entry in New York City (the only one there). Retrieved May 12, 2016. Provides surname spelling without the terminal "e", name with "Jr.", age of 7 as of 1920, mother's name as "Rosa" or "Rose", New York City residence. Copy is poor; data columns verified by comparison to legible blank 1920 census formArchived 2008-10-31 at the Wayback Machine. Census-taker's handwriting poor as well, but "e" clearly absent. Note: Full details of search results, including scan of document, only available to site subscribers, but original document on file in US National Archives.
c.ancestry.com
1920 United States Federal Census. Washington, DC: United States Census Bureau. 1920. "Rudolph Wanderon" entry in New York City (the only one there). Retrieved May 12, 2016. Provides surname spelling without the terminal "e", name with "Jr.", age of 7 as of 1920, mother's name as "Rosa" or "Rose", New York City residence. Copy is poor; data columns verified by comparison to legible blank 1920 census formArchived 2008-10-31 at the Wayback Machine. Census-taker's handwriting poor as well, but "e" clearly absent. Note: Full details of search results, including scan of document, only available to site subscribers, but original document on file in US National Archives.
"'Rudolf W. Wanderon' Waymark". Waymarking.com. Seattle: Groundspeak. January 26, 2008. Retrieved 24 August 2008. Includes three photos of his grave marker; provides birth and death dates, and legal surname spelling.
web.archive.org
1920 United States Federal Census. Washington, DC: United States Census Bureau. 1920. "Rudolph Wanderon" entry in New York City (the only one there). Retrieved May 12, 2016. Provides surname spelling without the terminal "e", name with "Jr.", age of 7 as of 1920, mother's name as "Rosa" or "Rose", New York City residence. Copy is poor; data columns verified by comparison to legible blank 1920 census formArchived 2008-10-31 at the Wayback Machine. Census-taker's handwriting poor as well, but "e" clearly absent. Note: Full details of search results, including scan of document, only available to site subscribers, but original document on file in US National Archives.
"Profile". Time. December 28, 1970. Archived from the original on December 11, 2008. Retrieved May 12, 2016.