The source for this selection is The Journal of Henry D. Thoreau "In Fourteen Volumes Bound as Two" copyright 1962 Dover Publications, which in turn is the republication of the Houghton Mifflin Company publication of 1906. Comments included in the HTML source supply the page number and location on the page (A=upper-left, B=upper-right, C=lower-left, D=lower-right) where the quote may be found in the Dover publication. So, for example:
This quote is to be found in the upper-left quarter of page 23.<!-- 23A --> How indispensable to a correct study of Nature is a perception of her true meaning. The fact will one day flower out into a truth. The season will mature and fructify what the understanding had cultivated.
The illustrations preceding the first seven volumes are from the 18th century artist Mark Catesby, from The Philadelphia Print Shop, Ltd. (http://www.philaprintshop.com/). I have converted them to Gif format to decrease their size, and slightly modified their appearance so that they appear with a border.
The last seven volumes are Audubon illustrations, from a site no longer on the net and also from http://www.tfaoi.com/aa/2aa/2aa53.htm and http://www.jjaudubon.com/boa_ro/list_plate1.html.
Individual quotes may be copied at will. However, this particular compilation as a whole, or any extended excerpt, is Copyright John Raithel. You may use, copy and distribute this collection as you please provided it is not done for financial profit and this copyright notice is included with any distribution.