for Listen Up! by Monica Kulling and Richard Walz
"IT'S 1876 AND THE whole country is celebrating the 100th birthday of the United States. The biggest party is in Philadelphia at the World's Fair, where the latest and greatest inventions are on display for all to see. Alexander Graham Bell is headed to the fair to demonstrate his invention - a talking machine he calls the telephone. But will anyone come to see him at the world's most important science fair? And more importantly, will his machinework? This Step 3 reader celebrates the resilient, quirky spirit of inventors."
Publisher description retrieved from Google Books.