Kp. Beringʼs successors / James R. Masterson and Helen Browe. - Seattle, 1948.

LCA online

Books google, 13.02.2017 https://books.google.pl/books?id=4Fz7bH5PAVkC&pg=PA177&lpg=PA177&dq=Masterson,+James+Raymond++(1905-1981).&source=bl&ots=94uBE6alhJ&sig=IdMghT-szU2OJUoKEjhEXvqmks4&hl=pl&sa=X&ved=0ahUKEwitsN6F64zSAhVFBiwKHa-eAnkQ6AEIHDAA#v=onepage&q=Masterson%2C%20James%20Raymond%20%20(1905-1981).&f=false