Listen up! : Alexander Graham Bell's talking machine /
Alexander Graham Bell's talking machine.
by Monica Kulling ; illustrated by Richard Walz.
- 1st ed.
- New York : Random House, c2007.
- 48 p. : col. ill. ; 23 cm.
- Step into reading. Step 3 book. .
Alexander Graham Bell invents a talking machine he calls the telephone and demonstrates it at the World's Fair in Philadelphia in 1876.