Tom Swift and His Electric Rifle

In this book, Tom Swift invents an electric rifle and a new airship called the Black Hawk.

He embarks on an African safari with a big game hunter and his friends, where they encounter various adventures, including rescuing missionaries held captive by savage tribes.

The electric rifle is a central invention, capable of firing bolts of electricity and adjustable in range and intensity.

The story is notable for its depiction of early 20th-century attitudes and inventions, although it contains racist content that is now considered offensive.