Major General McC[lellan] June 18. 1862.
Yours of to-day making it probable that Jackson has been reinforced by about ten thousand from Richmond, is corroborated by a despatch from Gen. King2Open page at Frederick'sburg, saying a Frenchman just arrived from Richmond by way of Gordon'sville, met ten to fifteen thousand passing through the latter place to join Jackson.
If this is true, it is as good as a reinforcement to you of an equal force. I could better dispose of things if I could know about what day you can attack Richmond, and would be glad to be informed, if you think you can inform me with safety. A. LINCOLN