According to Plymouth Song Index, "Lily of Laguna" is contained these books:

All-time hits, 250, arr. all keyboards, vol.4 (s   1993       Score
Bumper book of pub favourites, ed. p. foss (song   1988       Songbook
Great songs of the 20th century, 1900-1950         1999       Songbook
Boomps-a-daisy: 40 singable songs                  1986       Songbook
Eastenders sing-along: all keyboards               1985       Songbook
1910s, music for the millennium                   1997       Songbook
Boiled beef and carrots (songbook)                1987       Songbook
It's easy to play Music Hall                                  Songbook
Bumper book of music hall songs, ed. p. foss       1988       Songbook
Ulverscroft large print song book, music edition   1981       Songbook
101 pub favourites for buskers, piano/organ/guit   1986       Songbook
Songs of the British music hall                   1971       Songbook
Illustrated Victorian songbook                               Songbook

~Masato