The Accelerati Trilogy by Neal Shusterman and Eric Elfman includes Tesla's Attic, Edison's Alley, and Hawking's Hallway. This Trilogy is entertaining and packed with adventure and mystery.
After the main character Nick's mom dies, he and his family move to Colorado Springs, Colorado, to live in a house that they inherited fom a relative. Nick soon discovers that some of Tesla's old inventions reside in the attic, now Nick's bedroom. He discovers an old secret agency called the Accelerati after he unknowingly sells Tesla's old inventions in a garage sale.
The recommended age is 8-12, but anyone who enjoys action packed adventure will enjoy this book.