John is referenced as "adopted son" in May Peet's obituary in 1960.  . He is not mentioned in Louis's obituary in 1951. He was in the household at the time of the 1940 Census, identified as "J Francis Peets, son. 
↑ Find a Grave, database and images. accessed 10 July 2020: memorial page for May Odena Tebo Peets (26 Jun 1883–31 Jul 1960), Find A Grave: Memorial #75410723, citing Saint Marys Cemetery, Brushton, Franklin County, New York, USA ; Maintained by Richard Lambert (contributor 47155848) .
Ancestry.com. U.S., Public Records Index, 1950-1993, Volume 2 [database on-line]. Lehi, UT, USA: Ancestry.com Operations, Inc., 2010. Original data: Voter Registration Lists, Public Record Filings, Historical Residential Records, and Other Household Database Listings.