Старий, сын, я(?) и Славиьо на пластовiй оселi "Сiч".
Грефтон 3.VIII.1957

The old, son, me(?) and Slavio in the plast camping centre "Sich".
Grafton 3.VIII.1957

Grafton is situated in Canada. Plast is an Ukrainian Scout Organization.
http://en.wikipedia.org/wiki/Plast#Fifth_Phase:_1950-1989