There are 4 titles associated with this firm.

Porter, Anna M. The Hungarian Brothers by Miss Anna Maria Porter. In three vols. The Second Edition. London: Longman, Hurst, Rees, and Orme, 1808.
Grant, Anne. Letters from the Mountains: Being the Real Correspondence of a Lady, Between the Years 1773 and 1807. In Three Volumes. The Fourth Edition. London: John Hatchard [190 Piccadilly], Longman, Hurst, Rees, and Orme, Harriet Cook, 1809.