About

D. C. Missinger, architect.

1930 census:
2309 Observatory Avenue (Value: $12,000): 1) John P. Heinrich, owner and head of household; 46 year old white married male; married at age 22; born in Illinois; father born in Germany, mother in Illinois; a commercial traveler in plumbing. 2) Hazel Heinrich, wife; 40 year old white married female; married at age 17; born in Illinois; parents born in Kentucky; not working. 3) Gwendolyn Heinrich, daughter; 21 year old white single female; born in California; not working. 4) Nedra Heinrich, daughter; 18 year old single white female; born in California; not working.

1940 Census:
2309 Observatory Avenue (Rents for $50): 1) Joseph C. Bevell, head of household; white married male 52 years of age; born in Kansas; proprietor, ice machine company.