Basic Guidelines For English Spellings
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= histographic .
Mid 19th century; earliest use found in Robert Mayne (1808–1868). From histo- + -graphical, after histography.
Historiographical.
Early 20th century; earliest use found in Bulletin Military Notes. From histography + -ical.
= histographic .
1970s. From histograph + -ical; compare -graphical.