Examples from the Web for vo
The Nodal brothers' Relacion, which they seem to have been following, mentions, p. 37 vo.
It is best, therefore, to assume for Vo and Vi values which experiment has shown to be most advantageous.
"So—vo—lofski, the heroic Pole," cried Madame Beavor, with sundry misgivings at the unexpected cowardice of so great a patriot.Night and Morning, Complete|Edward Bulwer-Lytton
P'raps you may ask for it five minits artervards, p'raps I may say I von't pay, and cut up rough.The World's Greatest Books, Vol III|Arthur Mee and J.A. Hammerton, Eds.
Like Dante, vo significando: I am a drain-pipe for her spirit.Rest Harrow|Maurice Hewlett