The federal calculator, or, American schoolmaster's assistant and young man's companion [microform] : being a compendium of federal arithmetic, both practical and theoretical, in five parts / originally compiled by Thomas Dilworth ; revised, improved, and adapted to the currency of the United States by Daniel Hawley.
- Troy [N.Y.] : Printed and sold by Parker and Bliss, 1811.
viii, 192 p.
- 3rd ed. corr. for the proprietors.
- Early American imprints. Second series ; no. 22979.