This may certify, that I the subscriber, wife to the late ATathias Zimmers, deceased, have no accounts in my books so as to ascertain the time of Mr Rumsey's bespeaking his machinery for bis Steamboat, or as to ttje time of his taking it away -- but that Michael Baltzel turned works to finish the first machinery said Rumsey had of my husband according to the best of my knowledge. -- As witness my hand, this 29th, April 1788.

ELIZABETH ZIMMERS.

No. 16.

The certificate of Michael Baltzel, Turner, which establishes the time of Mrs Zimmers' fact.

Frederick-town, 11th. April, 1788.

This may certify that I the subscriber turned works for M^ James Rumsey of Virginia, for his Steamboat viz. a round piece of wood about eight inches diameter and about four feet long, &c. to round his copper works upon -- said turning was done in March 1786.

As witness my hand

MICHAEL BALTZEL.

No. 17. The certificate of M"" Jonathan Morris, inn-keeper, which confirms the assertion of Governor Johnson's . letter, that the " Designed purpose of the cylinders was a subject of pretty general conversation " in Frederick-town, and therfefore had it been prior to my petition to the assembly of Maryland the middle of December, 1785, M^ Foy, the member of assembly resident in that town must have known it, and the house have received information from him, when probably they might have assigned other reasons for rejecting my petition than mere bareness of finances. If all the machinery was ready to put on board, as M^' Morrow swears, on the first December, it must have been a fact notorious to the whole town ; but the following declaration shows that so far from being on board in December, 1785, it was shut up as a secret even so late as the latter end of March following ; so that thi?