A folder of signals created by students titled Promiscuous signals a 1810 letter on signals in enemy hands.

A folder of signals created by students titled Promiscuous signals, Naval Science a quarterly magazine edited by E. J. Reed. With letters from the Admiralty on possible compromising of the signals that have fallen into enemy hands. Including loose pages covering signals by day, signals by night, signals in a fog, fire ship signals, additional chasing signals and fighting signals. See SIG/D/26 for printed version. (Formerly L65/56)