J. H. Ingraham,
The South-West, by a Yankee. In Two Volumes…
“ Among the manuscripts of this gentleman in the author's possession, is the following account of the manufacture of Indigo, written by himself, then an extensive indigo planter, near New-Orleans."The reservoir water in or near the field where the indigo plant is cultivated, is prepared, in lower Louisiana, by digging a canal from eighty to one hundred feet long, and 25 or 30 feet wide. The plant is in its strength when in full blossom: it is then cut down, and disposed regularly in a wooden or brick vault, about ten feet square, and three feet deep ”
