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Sight Reduction Tables for Air Navigation, Pub. No. 249, National Imagery and Mapping Agency, http://msi.nga.mil/NGAPortal/MSI.portal?_nfpb=true&_st=&_pageLabel=msi_portal_page_62&pubCode=0012
Sight Reduction Tables for Marine Navigation, Pub. No. 229, National Imagery and Mapping Agency, http://msi.nga.mil/NGAPortal/MSI.portal?_nfpb=true&_st=&_pageLabel=msi_portal_page_62&pubCode=0013
USNO Celestial Navigation Data, http://msi.nga.mil/NGAPortal/MSI.portal?_nfpb=true&_pageLabel=msi_portal_page_62&pubCode=0002
USNO Complete Sun and Moon Data for One Day, http://aa.usno.navy.mil/data/docs/RS_OneDay.php
USNO Rise/Set/Transit Times for Major Solar System Bodies and Bright Stars, http://aa.usno.navy.mil/data/docs/mrst.php
USNO/UK Hydrographic Office, The Nautical Almanac (published yearly), http://aa.usno.navy.mil/publications/docs/na.php