Who are the parents of Leroy Bigger b 1892 d 1971 buried in Highland Cemetery in Winfield?

According to entries on WorldConnect; Leroy was son of George Maynard Bigger b. 1852 Miami Co., OH & Nancy WELCH b. 1856 IL. George was son of Adam BIGGER liv 1870 Macon Co., IL.

Can you send me the link for finding Leroy Bigger born 25 May, 1892 being the son of George and Nancy Bigger? I found a Roy Bigger born 6 Oct 1893 on WorldConnect. Thank you.

1920 Fed Census, Cowley Co., KS; head of house - G. M. BIGGER age 67 b. OH; father b. OH mother b NJ; in house - Nancy E. 'wife' age 64 b. IL; Leroy 'on' age 28 b. MO; Georgia 'daug' age 37 b. KS

WWI DRAFT REGISTRATION: LeRoy BIGGER liv. Geuda Springs, KS 5 June 1917; b. 35 May 1891 MO; works for self Beaver Twp., Cowley Co., KS; supports mother & father; single.

possible:
1930 Fed. Census; Santa Fe, Pawnee Co., KS; State Hospital - Leroy BIGGER b. ca 1894 'patient'
1940 Fed Census; Larned State Hospital, Larned, KS; 'inmate' Leroy BIGGER b. ca 1893 MO 'single'

SSDI Leroy BIGGER b. 1892; d May 1971 Arkansas City, KS

WW I DRAFT REGISTRATION should read born "25 May 1891" MO