And the family did live right around the corner at 4 University Place in 1930 and 1940. It looks like # 12 has been torn down?
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XM56-FBN : accessed 18 August 2020), Edward Frisbie in household of George A Frisbie, New Haven, New Haven, Connecticut, United States; citing enumeration district (ED) ED 70, sheet 4B, line 99, family 92, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 276; FHL microfilm 2,340,011.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KW9M-YG5 : 1 December 2019), Edward L Frisbie in household of George A Frisbie, Ward 21, New Haven, New Haven Town, New Haven, Connecticut, United States; citing enumeration district (ED) 11-125, sheet 4A, line 35, family 86, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 541.