28 June. The congress resolved that M. Le Chevalier de Kirmovan be employed by Pennsylvania in planning and laying out the fortifications at Billingsport on the Delaware River (JCC description begins Worthington C. Ford and others, eds., Journals of the Continental Congress, 1774–1789, Washington, 1904–1937; 34 vols. description ends , 5:490–491).
“28 June., 28 June 1776,” Founders Online, National Archives, https://founders.archives.gov/documents/Adams/06-04-02-0115-0002-0008. [Original source: The Adams Papers, Papers of John Adams, vol. 4, February–August 1776, ed. Robert J. Taylor. Cambridge, MA: Harvard University Press, 1979, p. 254.]
