World War I Draft Registration Cards, 1917-1918
about Herman Fischer
Name: Herman Fischer
City: 2600 S. Sartain St., Philadelphia
County: Philadelphia
State: Pennsylvania
Birthplace: Kiev, Russia
Birth Date: 28 Sep 1893
Race: Caucasian (White)
Citizen: declarent, 1st papers
Occupation: shoe salesman, Drav & Abdill(?), 13 No. 4th St., Phil
Dependants: Wife, child & mother
short height/slender build; dark brown eyes & hair
Roll: 1907763
DraftBoard: 40
June 5, 1917

U.S. World War II Draft Registration Cards, 1942
about Herman C Fischer
Name: Herman C Fischer
Birth Date: 28 Nov 1893
RESIDENCE: 2402 Golf Rd., Philadelphia PA
Birth: Russia
Contact: Celia Fischer, 2402 Golf Rd.
Employer: Krischer Rogers* & Fischer, 20 N 4th St. Phila
Roll: WW2_2240166
April 1942
* can't tell if says "Rogers" or "Ragers"

1930 United States Federal Census
April 25, 1930
Name: Herma C Fiehn
Home in 1930: 5342 Baltimore Ave., Philadelphia, Philadelphia PA
Age: 36
Estimated Birth Year: abt 1894
Birthplace: Russia
Relation to Head of House: Head
Spouse's Name: Celia
Race: White
Occupation: salesman-shoes
Military service: no
Rent/home value: owns, %5800
Age at first marriage: 22
Parents' birthplace: Russia
Household Members: Name Age
Herma C Fiehn 36, head, mother tongue=Jewish, immig 1898
Celia Fiehn 33, wife, b PA, parents b Russia
Evelyn Fiehn 13, daughter, b PA
Martin A Fiehn 8, son, b PA
Geraldine Fiehn 1 & 9 months, daughter, b PA

If above is right family, could have sent young Charles off to a boarding school, etc or could have been living with a relative for some reason.

Good luck!