1770 P. Luckombe 271 Neat Workmen prevent a division of a single-letter syllable at the end of lines.
1878 H. MacColl in 10 26 The monomial (or single-letter) statements.
1964 D. Ward in D. Abercrombie et al. 393 For the convenience of readers not familiar with Cyrillic a single-letter transliteration system is given.