Eli Tervo's friends

Eeli Tervonen, aka Eli Tervo in the US, was born in Paltamo in 1890. He went to America in 1909 and again in 1913. He died in an accident in Quincy Mine in Hancock in 1916. His brother Adolf Tervo was married to Helga's sister Ida. The first picture is with Eli Tervo and Arthur Tervo (born 1912), Ida's and Adolf's son. As Arthur looks like a two-year-old in the picture, this must have been taken around 1914 or 1915. The second and third picture has Eli with his friends. The last pictures are of Eli's friends alone. Does anyone recognise them?