1841 18 Sept. 233/1 Mr. Heeley's ingenious spring letter clip takes precedence of all the numerous contrivances for a similar purpose.
1859 G. A. Sala xviii. 204 Letter-clips, portfolios, music-cases.
1916 G. L. Johnson (rev. ed.) 283 Clip the plates together with strong letter clips.
2005 B. Ginn & P. Klassen 15 Attach letter clips to cardstock strip for the title.