Civil Registration Indexes (Births)
Probably:

Douglas Sales, reg. 4th quarter of 1892, Goole, Yorkshire West Riding, England.
Arthur Douglas Sale, reg. 1st quarter of 1896, Hackney, London, England.
Douglas James Sales, reg. 1st quarter of 1898, Steyning, Sussex, England.
Thomas Douglas Sale, reg. 2nd quarter of 1907, Toxteth Park, Lancashire, England.
Douglas William Sales, reg. 3rd quarter of 1908, Risbridge, Suffolk, England.
Douglas Alfred Sale, reg. 4th quarter of 1909, Stoke upon Trent, Staffordshire, England.