grogel,
Here you go.
1880 US Census. Frederick H Doell, born in Boston, was the son of German born gunsmith Frederick G Doell.
His WWI draft registration card.
1924 Boston City Directory ad.
WWII draft registration card. Notice the work address has changed.
According to the Boston city directory, he and his father worked out of 61 Elm Boston until about 1883.
Pete