I purchased a USA Hydrological Map for my daughter for Christmas, 2018. She first saw a similar one displayed at REI. I admit I did hesitate at the price, and called Muir Way to ask some questions about the map as I had not seen one in person. The man I spoke with chatted easily with me, answering my questions and helping me think through the options of size and color. I purchased the 30'x40' map in green on paper as a special treat, as my daughter is a Civil Engineering student at the University of Illinois pursuing a career in water. I would not hesitate to buy another map from Muir Way in the future, and will not hesitate at the cost. The detail of the waterways, the quality of the paper, and the intensity of the color make the map spectacular.