Watts, I. (1781). Horae lyricae: Poems chiefly of the lyric kind : in three books. Philadelphia: Printed and sold by R. Aitken, at Pope's Head, three doors above the coffee house, Market Street.

Watts, Isaac. Horae Lyricae: Poems Chiefly of the Lyric Kind : In Three Books. Philadelphia: Printed and sold by R. Aitken, at Pope's Head, three doors above the coffee house, Market Street, 1781.

Watts, Isaac. Horae Lyricae: Poems Chiefly of the Lyric Kind : In Three Books. Philadelphia: Printed and sold by R. Aitken, at Pope's Head, three doors above the coffee house, Market Street, 1781.