It's still available but almost all of the numbers in it are Loran TDs and they are old. you would burn a LOT of gas trying to find them and would have to have a working Loran on board since there is no accurate way to convert them to Lat/Lon.
Try calling (409) 762-9800. That's the number that's on the inside cover of my copy.
Try calling (409) 762-9800. That's the number that's on the inside cover of my copy.