Smithsonian Report. 1954. — Locning 



Plate 5 



1. 'I'lu' 1 ,1 icinii'j 111! nil ipiaiic 1 1\ 



i'Ms. riic first rigid strut-braced wiiiL.' structure, nrit widely 

 used until 20 \ears later. 



2. 'I'hc Loenintr Air Yacht of 1921, Collier 'rrophy winner. The nioimplane structure was 

 Strong, simple, and efficient, but not popular enouyh iov acceptance at the time. 



