Letter from H.C. Trumbull to John William Dawson, written from Philadelphia.

Letter from H.C. Trumbull to John William Dawson, written from Philadelphia.

Letter from J. Thomas to John William Dawson, written from Philadelphia.

Letter from B. J. Harrington to Anna Dawson, written at Philadelphia. Written on Geological Survey of Canada letterhead.

Letter from E.D. Cope to John William Dawson, written from Phila.

Letter from J.T. Napier to John William Dawson, written from Philadelphia.

Letter from J.P. Lesley to John William Dawson, written from Philadelphia.

Letter from Charles Brinley to B.J. Harrington, written from Philadelphia.

Letter from G.W. Anderson to John William Dawson, written from Philadelphia.

Letter from E.D. Cope to John William Dawson, written from Philadelphia.