[1] The cast of characters in In the Zone is listed in the 1919 collectionThe Moon of the Caribbees and Six Other Plays of the Sea.

[2] In the Zone opened October 31, 1917 by The Washington Square Players at The Comedy Theatre.

The cast included Bonar Colleano, Finlay Currie, Alec Mango and Jack Newmark.

[3] A 1957 version of In the Zone was a very early attempt at Australian television drama, airing during the first few months of TV in that country.

Most of the very early Australian television drama were adaptations of overseas stage plays, or new versions of works originally presented on the BBC in the UK.