Charles E. Sprague, Hand-book of Volapük — 1.1 (1887)
“ Put all the above nouns into the plural, giving the English meaning of each.2. Express in Volapük : books, days, men, houses. mice, months, geese, boys, weeks, dollars.3. Would you use ol or ols in the following sentences ?: "Are you an American ?" "Will you take seats ?" ”
