1. Agnew, D. C.: 2004, ‘Robert Fitzroy and the myth of the ‘Marsden Square’: Transatlantic rivalries in early marine meteorology’, Notes Rec. R. Soc. Lond. 58(1), 21–46.
2. AWS-WB (Air Weather Service and Weather Bureau): 1954a, Reference Manual 193: Dutch Marine Obs, HQ, Air Weather Service, Data Control Div., and Weather Bureau, Climatological Services Div. (rev. 30 October 1954), 7 pp. [Available from NCDC.]
3. AWS-WB (Air Weather Service and Weather Bureau): 1954b, Reference Manual 194: British Marine Obs, HQ, Air Weather Service, Data Control Div., and Weather Bureau, Climatological Services Div. (12 May 1954), 11 pp. [Available from NCDC.]
4. AWS-WB (Air Weather Service and Weather Bureau): 1958, Reference Manual 192: Deutsche Seewarte Marine, HQ, Air Weather Service, Data Control Div., and Weather Bureau, Climatological Services Div. (rev. 10 February 1958), 14 pp. [Available from NCDC.]
5. AWS-WB (Air Weather Service and Weather Bureau): 1964, Reference Manual 116: U.S. Marine Sfc. Obs., Climatic Center, USAF, Air Weather Service (MATS), and NWRC, Office of Climatology, U.S. Weather Bureau (rev. September 1964), 11 pp. [Available from NCDC.]