Thought I would try a lookup for you.Eldon is in Wapello Co, Iowa and there is no census record for an Arthur Allen born 1897 there on the 1900 census.I did find two good possibles, tho neither of them are on the 1895 Wapello Co, census.If you have found your Arthur on a later census, maybe you can check to see where he states his parents are born.
1900 IA, Sac co, Boyer Valley, ED 115 Allen, Roswell H.41 bn Mich, md 9yrs Jennie L.29 bn IA, 4 kids/3 alive Hazel L.9 bn IA Ferris R. 3 bn IA (female) Arthur W. 2 bn IASept 1897
1900 IA, Fayette Co, Jefferson twp, ED 78 Allen, Albert27 bn VA, md 5yrs Margaret 24 bn IA, 2kids/2 alive Arthur W. 3 bn IASept 1896 Albert J. 8/12bn IA Nov 1899
The only Arthur Allen on the 1900 IA, Wapello Co census is in Polk twp and is born on May 1992.