Respectfully, &c. VALLEY FORGE. Sept. 27, 1842. R. M. WHITNEY, Esq.,--Dear Sir--I am provoked to find that, upon comparing my copy of Col. Smith's letter to Col. ----, with the original, that I have made another error! I hope this will reach you in time for its correction. Speaking of his visit to Gen. Washington at Mount Vernon and _Washington_, it should be, and _Philadelphia_. Respectfully, &c., VALLEY FORGE. Sept. 28, 1842. R. M. WHITNEY,--Dear Sir--I have been absent for a day or two from the city, and did not receive your note until to-day. I enclose a note for publication--oblige me by letting it appear to-morrow. I cannot imagine how so stupid an error could have occured as the erroneous date of Kemp's discharge by Gen. Washington. But the error almost corrects itself--as Kemp's letter of July 2d, speaks of the battle of Monmouth on the 28th. I do not know whether the blunder is that of your workman, or mine in the haste of transcribing. One or two other errors, which are mine, I made the subject of two notes, which I addressed you through the Post-office. My absence from town, and my intended absence to-morrow, prevent my preparing another article for Saturday. Possibly, I will have it ready for Monday, and certainly for Tuesday. Acknowledge its receipt, and that it will appear on Monday or Tuesday. I have not yet come to the _real gems_ of my budget. Reed shall have a surfeit. Respectfully, &c., VALLEY FORGE Sept. 30, 1842. R. M. WHITNEY, Esq: Dear Sir--Nothing could have afforded me more pleasure than the publication which has been made by the Reeds. It has given me the opportunity, which I have from the first been seeking, of bringing the question of General Reed's revolutionary exploits to a _crisis_. I pledge myself to you, that I will overwhelm them with confusion and shame. I have not called for your letter at the Post-office, because _I know that I am watched_; and I do not desire to be known till the adoption of my proposition to the Reeds, of which I speak in the accompanying communication, and which I will furnish for publication in Monday's Journal. They have fallen completely into the snare. Yours, &c., very truly, VALLEY FORGE. October 14, 1842.