This auction is for a shrink-wrapped set of ten (10) brand new field notebooks titled "The River Field Book." This field notebook was designed by Luna Leopold and Hilton Lee Silvey for use in hydrology and geomorphology. These are the older version that I bought directly from Hilton Lee Silvey in the late 90s. Bought a bunch of them and these are what was left when I retired. They are 4 1/2" x 7 1/4" in size, hardbound in water resistant coated board, and have about 180 pages, plus some additional pages with reference data and field forms for stream morphological data. Don't know if the paper is water resistant, but I never had problems with it being wet. I haven't seen these for sale in a long while and don't know if they're still in production. This set may be one of the few last remaining.