It must have been a preferred subject at the US C & GSS because in three different years 1931,1932 and 1933, three different student papers were submitted with the almost the same title and subject. Well, perhaps you will find a difference of comments......
Joe
http://cgsc.cdmhost.com/cgi-bin/showfile.e...ilename=392.pdf

http://cgsc.cdmhost.com/cgi-bin/showfile.e...ilename=389.pdf

http://cgsc.cdmhost.com/cgi-bin/showfile.e...ilename=377.pdf