Journal Kept by David Douglas During His Travels in North America, 1823-1827 - Together With a Particular Description of Thirty-Three Species of American Oaks and Eighteen Species of Pinus, With Appendices Containing a List of the Plan... #232780

I desire to express my very great indebtedness to Mr. Hutchinson for the extraordinary carefulness with which he has assisted me both in the deciphering of the difficult writing and also in the identification of the plants mentioned, which latter work adds enormously to the value of the publication and to the ease with which it may be consulted by modern Botanists and Horticulturists.