The key to Voster's Arithmetic
Subtitle: in which all the questions in the different rules are numbered under their proper head as in the Arithmetic: stated, explained, and, where it is necessary for the learner's information wrought at full length : in so concise a method, that in many questions not more than one-fourth of the figures usually employed by the common method will be necessary: principally intended for the use of teachers; gentlemen residing in the country, where a teacher conversant in accounts cannot easily be had; and young men put to business before they had finished their studies.
Contributors: O'Kelley, Francis J., fmo; Colville, William, fmo; McSweeney, Daniel, fmo; Keene, Martin, bsl; Voster, Elias.
Edition: Second edition, revised and improved.
Publisher: Printed by Richard Cross, sole proprietor
Published: 1808
Place of publication: Dublin (No. 28, Bridge-Street)
Language: eng
Number of pages: 255
Subjects: Arithmetic -- Problems, exercises, etc. -- Answers.
Notes: O'Kelley collection.

With signature (ms or stamped?): Dan M'Sweeney.

With signature: William Colville.

With engraved label: Sold by Martin Keene  Bookseller & stationer, 6, College Green, corner of Angelsea St..
Table of contents: value: Answers to problems in Elias Voster's Arithmetic.