Catherine Mikkelsen and unidentified lady (~1918)

 Collection: Mikkelsen

Alvin "Ally" Petersen, Peter and Martha Petersen's son, Chicago (~1918)

 Collection: Petersen

Marie Jatho MacLaughlan and Tom MacLaughlan (~1918)

 Collection: Maclaughlan

Louis Peter Petersen (eldest son of Hans and Catherina) in his World War I uniform, Chicago (~1918)

 Collection: Petersen

Henry Petersen, Louis and Anna (Majoros) Petersen's oldest son, Chicago (~1918)

 Collection: Petersen

Albert (Alfred) Petersen, Louis and Anna (Majoros) Petersen's second oldest son, Chicago (~1918)

 Collection: Petersen

Florence Mikkelsen, on the lawn outside her parents' home in Chicago (~1918)

 Collection: Mikkelsen

Anna Majoros Petersen (Louis' wife) and her mother Mary Majoros, Chicago (~1918)

 Collection: Petersen