Possibly three of the children of Alexander and Margaret McDonald McMinn.  Margaret was born about 1843 to Allan and Janet Grant McDonald of Hardwood Hill.  

Margaret and Alexander lived in various parts of the US.  

Pictured are (standing) David A "Dave" McMinn born about 1874, Charles H "Charley" McMinn born about 1870 and Elizabeth Janette "Lizzie" McMinn born about 1867. These three of Alexander and Margaret's children were born in Providence, Rhode Island. 

They also had a daughter Catherine L born in Connecticut about 1861 and a son, Kenneth A born about 1868 in Nova Scotia.  There were also two twin girls, Lena and May born about 1878.