The art of decyphering discovered: in a copy of verses to a lady, upon sending her an ænigma, written in cyphers.
Davys, John,1678-1724.
London : printed for Step. Fletcher; and are to be sold at his shop in Oxford,
1727.
Anonymous. Attributed to John Davys.
Reproduction of original from the Harvard University Houghton Library.
ESTC
Foxon,