In 1912 Crowther chaired the Commission of Enquiry into the affairs of the Anlo State which confirmed a list of Anlo chiefs and established the extension of the Anlo state to include Avenor, Afife, Aflao, DzoDze, Fenyi, Klikor, Somye and Weta territories.
- (1904) Short History and Description of the Gold Coast Colony, Ashanti, and the Northern Territories London: Waterlow & Sons
- (1906) 'Notes on a district of the Gold Coast' Quarterly Journal of the Institute of Commercial Research in the Tropics 3: 168-182.
- (1911) Gold Coast Handbook London (with W. S. D. Tudhope)
- (1912) Gold Coast: Report for 1911 London: HMSO
- (1916) Notes for the guidance of district commissioners, Gold Coast Colony Accra: Government Press