Dr. R. Grey's Memoria technica: or, a new method of artificial memory, applied to and exemplified in chronology, history, geography, astronomy, etc. Also, Jewish, Grecian, and Roman coins, weights, measures, &c. To which are subjoined, Lowe's Mnemonics delineated. In various branches of literature and science / [Richard Grey].

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Dr. R. Grey's Memoria technica: or, a new method of artificial memory, applied to and exemplified in chronology, history, geography, astronomy, etc. Also, Jewish, Grecian, and Roman coins, weights, measures, &c. To which are subjoined, Lowe's Mnemonics delineated. In various branches of literature and science / [Richard Grey]. Public Domain Mark. Source: Wellcome Collection.