It's available here:
http://digital.library.upenn.edu/wom...moth/moth.html
Note that this is a 1921 publication in the USA. Every US publication that is pre-1923 has entered the US Public Domain.
And I have already done versions for the MR library in other formats:
PRC:
https://www.mobileread.com/forums/showthread.php?t=40553
LRF:
https://www.mobileread.com/forums/showthread.php?t=40548
IMP:
https://www.mobileread.com/forums/showthread.php?t=40550
LIT:
https://www.mobileread.com/forums/showthread.php?t=40551
It was published in 1921, so it out of copyright in the USA. I'll move Weatherwax's version to our US server.