Census (Graphic):

( G )  —  the reproduction of the actual original census page, using graphic techniques.

      Census (Index):

( I )  —  an informational replica of the actual census page, indexed by another party (usually only using Surnames, Given Names, ages and gender (sometimes the individual's birthplace, household status, Enumeration District and Page number).

      Census (Notes):

( N )  —  Notes of explanation (usually by the transcriber) outlining data and symbols regarding the transcribed information.

      Census (Transcribed):

( T )  —  an exact informational replica of the actual census page, by another party, using some other technique (e.g. typewriter or clearer handwriting).