Fitzgerald, Penelope <br/><br/>
The Knox Brothers, Edmund, 1881-1971, Dillwyn, 1884-1943, Wilfred, 1886-1950, Ronald, 1888-1957 
/ Penelope Fitzgerald 
 - Washington, D.C.  : Counterpoint  , 2000  , c1977. 
 - 288 p. 
<br/><br/><label>ISBN: </label>1-58243-095-0 
<br/><br/><label>Dewey Class. No.: </label>920 FIT