I'm not researching this family but found several identified old photos on an auction site and thought a researcher here might be interested in seeing them (attached). I'm not the seller and know nothing else about them. Sorry.

I believe the photos belong to the below family.

1900 St Louis Ward 19, St Louis (Independent City), Missouri; Roll: T623 897; Page: 12A; Enumeration District: 285. North 19th Street
Valentine Burkhart, age 44, head, white, male, born Feb 1856, married for 22 years, born Germany, parents born Germany, Immigrated in 1872 (or 1879).
Genevieve Burkhart, age 44, wife, white, female, born Jan 1856, married for 22 years, had 8 children with 8 surviving, born Germany, parents born Germany, Immigrated in 1875, in US for 25 years.
Henry V. Burkhart, age 21, son, white, male, born Mar 1879, age 21, single, born Missouri, parents born Germany, Apprentice work.
Edward Burkhart, age 18, son, white, male, born Nov 1881, single, born Missouri, parents born Germany, Apprentice work.
Ottilie Burkhart, age 12, daughter, white, female, born June 1887, single, born Missouri, parents born Germany, at school.
Otto Burkhart, age 11, son, white, male, born Oct 1888, single, born Missouri, parents born Germany, at school.
Mary Burkhart, age 6, daughter, white, female, born Feb 1894, single, born Missouri, parents born Germany, at school.
Genevieve Burkhart, age 4, daughter, white, female, born Aug 1895, single, born Missouri, parents born Germany.
Flora Burkhart, age 3, daughter, white, female, born Apr 1897, single, born Missouri, parents born Germany.
Albert Burkhart, age 1, son, white, male, born Nov 1898, single, born Missouri, parents born Germany.

Photos are identified as:
Mayme Burkhart
Flora Burkhart
Albert Burkhart
Ottile Burkhart