Preston Boston 22 July 1775
Sir,
I have sent an Officer with a Party of Marines to the Light House with three days Provisions. The Preston's Long Boat is to remain with them. You will give them all the Assistance in your Power and direct what Signal they shall make in case of an Attack or other danger, in Order that you may send them the speediest help. If your Tender could cruise in the Lighthouse Channel to Night and Tomorrow, she would more readily discover the Rebels Approach than by any other means.
I am &c.
Sam Graves
1. Graves's Conduct, Appendix, 461, 462, MassHS Transcript.