• "I have just finished [reading] Yak Sarai and Shamshal-e-Bamisal by my favourite writer Mustansar Hussain Tarar. Your name [O'Neil] was mentioned so frequently in Yak Sarai that I could not resist searching for your book about Pakistan and have just ordered your Trekking in the Karakoram & Hindukush." Dr. S. Ijzaal Zaidi, January 2008



• "I own and treasure the Lonely Planet Trekking in Karakoram/Hindukush, and whenever I investigate the subject online, I always run into your names after a few clicks. I greatly respect and admire both of your careers, and thank you for the extraordinary work you have done." Matt Malone, March 2005



• "I own the second edition of your Lonely Planet guide to Trekking in the Karakoram and Hindukush. Let me congratulate both of you on a book that does an excellent job of putting my country and its people on the map in a positive light. My personal thanks for doing this service." Omar Shehryar, June 2004



• "The Lonely Planet trekking guide in Karakoram is great and provides very usefull information. Thank you very much for all the information you provide. It will be very helpful for us in order to prepare our expedition. Good job." Olivier Obert, April 2004



• "My wife and I are enthusiastic trekkers and have read your Lonely Planet trekking guide Trekking in the Karakoram and Hindukush. Thanks a lot." Roger & Maraga Iten, March 2004



• "Am reading your book, thank you, thank you." Susan Sawicki, February 2004



• "Last year we have started studying books, papers and Internet sites about mountaineering possibilities in Pakistan, but the information about peaks lower than 8000m are very rare. After the events of 11 September 2001 and the dispute between Pakistan and India at the end of the year, we have stopped our plan. But in January we have seen and bought your new Trekking Guide (Karakorum & Hindukush). So, we (two German mountaineers) are planning carefully again a trip to Pakistan. We want to congratulate you for the very informative and fine book! Thanks." Frank Homburg, March 2002



• "I read with great interest the fascinating information on your web page. As a student of South Asia and mountaineer myself it was thoroughly refreshing to come across all of your research, writing, teaching, exploration and adventure. Thank you." Gardner W. Heaton, November 2001



• "Be assured that my friend and I will order crates and crates of the upcoming revision of your Lonely Planet guide!" John Soos, March 2001



• "Many thanks for producing an excellent guide book. It has been an indispensable resource as I plan my trip to the Karakoram." Peter Lamb, June 2000



• "It was good to find out you were the authors of Trekking in the Hindukush and Karakoram. We had your book with us every time we visited northern Pakistan and it was extremely useful. Actually our expedition's leader has just told me you were their first contact three years ago, when they first ventured into Pakistan to climb. What was only a wild idea back then grew itself out to be a successful expedition, they were the first Hungarians to climb Tirich Mir. So we say hello, and remember you as someone who gave a few good tips when we didn't know virtually anything at all." Anna Haraszti, February 2000



• "I just returned from a summer in northern Pakistan, and my trip was greatly enhanced by your well-written book. The trek descriptions were easy to follow and allowed me to differentiate among the various options. I especially liked the summary section that listed all treks by region and rated them. As a novice trekker, this section was particularly important to me, because many other books I consulted did not clarify the difficulty levels of each trek. Of course, the maps were also very useful and well documented. Thanks again for your wonderful contribution to the set of mountain trekking guides." Cheryl Carruth, September 1999

"We have found that trekking Pakistan's northern mountains calls for an open spirit of adventure and a sense of humor, and brings the rewards of perhaps the most spectacular mountain scenery in the world, the gracious warmth and hospitality of the people met, and a feeling of accomplishing something remarkable."