Frank Hamabe

I have an oil, painted in the summer of 1946 when he (and my husband, Elden Rowland) were students at the Farnsworth School in North Truro, Cape Cod. 24 wide, 15 high, on board, subject students waiting for mail at the North Truro post office.

I am interested in learning more about Frank Hamabe. I have an oil on board painting in the summer of 1946 on Cape Cod, which I propose using as an illustration in a possible book on my hus band's work (Elden Rowland. Who has copyright control?