1. Attention Steam Engine Folks! Horn & Whistle takes you on a tour through another interesting steam plant, and this one's very impressive to say the least.
2. Antique Electric Motors. Part two. Here we look at single phase AC motors.
3. New Contest. The “What the Heck Is It?” Contest in # 119 was not too bad! Even the one in # 120 is not too difficult, but the one planned for #121 is going to be a lot more difficult. Count on it! We'll keep you guessing and wondering this time, definitely!
4. What's the Horn Doctor up to now? As always, it's an interesting project, as this next Horn Doctor article demonstrates.
5. World's Largest Fully Functional Pipe Organ. When we start to go on tour through this monster pipe organ, it's going to appear at times that we are visiting an industrial plant instead of a musical instrument. Inasmuch as all of our horns and whistles derived from the pipe organ, we at H&W hold these instruments in high regard, and also because we love all things mechanical, visiting this gigantic instrument really captures our interest.

We also have another look at the Marketplace as well as many other interesting stories and features that relate to our Horn and Whistle hobby.

Here are some of the recent articles which have appeared in the last several issues of Horn & Whistle.

• One hundred years of Turbine Technology. Horn & Whistle visited a utility power plant which contains both a very early GE vertical turbine and the latest, high pressure modern turbines. Also look at an interesting Corliss engine powered pump at the same facility. (H&W # 105)
• The Fabulous Sanfilippo Collection. This private museum outside of Chicago holds steam engines, a steam locomotive, a fantastic collection of old phonographs, steam whistles, early electrical machinery, and the world's largest theater pipe organ. We take you there in a two-part article.
• How Does a Railroad Air Horn Work? How do these relatively small signals manage to make so much noise? We look first at a generic air horn and then we examine the Nathan K Airchime in detail to see exactly what's inside and how it works.
• Where it all Began. Here's a brief look at the mighty pipe organ. It was from the pipe organ that our horns and whistles were developed. Read about the original collection of horns and whistles and see how the industrial revolution influenced pipe organ design, just as the pipe organ influenced the industrial revolution by giving it the steam whistles and air horns that we love.
• The Railroad Whistle's Companion. Learn about an interesting companion technology to the RR whistle. It was just as important if not even more important to the proper functioning of railroads as the train whistle. Some of the greatest mechanical engineering minds of the 19th century devoted their lives to this specialized technology. Read about it in Horn & Whistle issue #107.
• Recently, Horn & Whistle discovered a Corliss Engine and the original fire-tube boilers still installed in a municipal water works pumping station. Read about this rare find in H&W # 104.
• Restoring a Leslie SuperTyfon RR horn. HWEG member Mike Muha takes you through a step by-step restoration of the famous Leslie RR horns and also shows you how the unique Leslie diaphragm system works. (H&W # 102)
• They still make Steam Whistles Today! Horn & Whistle visits the 100 year old factory of the Lunkenheimer Company in Cincinnati, OH. They are still making solid bronze steam whistles today and we'll show you how they do it in this wonderful manufacturing anachronism. And, you'll learn about the interesting market that still exists for steam (and compressed air) whistles.
• How Sirens Work. This three part series shows you how the major siren types operate and what is inside to make all that noise.

For an interesting look at some unusual and little-known technology, subscribe to Horn & Whistle Magazine, the only print (and now on-line as well) publication dealing with horns, whistles, sirens, foghorns and other high-powered industrial noisemakers as well as other related subjects.

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