Part 2 Events By Bookclub Period: 1877 to 1887 Gilded Age (began 1870) Period: 1877 to 1887 Second wave Industrial Revolution (began 1870) Oct 1, 1877 Edison's patent on the phonograph 1880 93,000 miles of rail track in service -jumped to 165,000 in 1890 -from 1st transcontinental rail laid in 1869