Yes, indeed, Big Mick - this is the internet at its best! Thanks to Bronwen from whom I hope we'll learn a little more about this excellent but relatively unsung publishing effort.

Let me add to the list, Q:

Adventures in Songs.
African Songs
Amigos Cantando (perhaps a different ed.)
Chansons de Notre Chalet 2nd ed ( + 16 pp update making 3rd ed.)
Golden Bridge: German Folk Recreation
Good Fellowship Songs
Great Day: Negro Spirituals
Happy Meeting: Folk Songs from Czechoslovakia
Laat Ons Almal Saam Sing: Let us sing together (S. Africa)
Manitowoc Sings
Merry Hours: favorite Hungarian Folk Songs
Nice Songs to Know and Remember
Nice People to Know and Remember
One Tune More
The Pagoda: Thirteen Chinese Songs
Play Party Games of Pioneer Times: Kit P
A Pocket Full of Songs
Rique Ran: Games and Songs of South American Children
A sampler of Japanese Songs
Sing a Song
Song-Games of Trinidad and Tobago
Songs of Many Nations 11th ed.
Songs of Many Nations 12th ed.
Songs of Many Nations (unknown ed.)
Songs of the Wigwam
Swiss Alpine Songs
Work and Sing: An International Songbook
World Around Carols

I also have:
- "Informal Notes: A Kit of World-Around Songs for Leaders of Group Singing" (Spring 1961)
- "Conference Songs", "selected by Robert W. Wadsworth for the 24th Annual NYSSMA Conferecne, Dec. 6-9". This is published by "Informal Music Service, Delaware, Ohio" and carries the World Around Songs logo.

Could "world around" be a way of avoiding the word "international", a tricky term to use in the US in the years following McCarthyism, since it smacked too much of international communism?

Jon Bartlett