1. HW author of The Twins of Ceylon, b.1903.
2. HW author of Booth-Tucker is Harry William George Williams, salvationist.
3. HW author of The Gay Christian Movement... was Harry Abbott Williams, b.1919. (He has his own author page as H A Williams.)
4. HW author of An Army Nees an Ambulance Corps.. is listed in LoC as 'Dr Harry Williams'. The work is about the Salvation Army so #4 may be the same as #2.
5. HW author of The Edge is What I Have.. is a US writer on literary criticism.
6. Harry Williams (Henry James Williams, 1873-1924), co-author with Jack Judge of 'It's a long way to Tipperary' (1912).