The New Junior World Encyclopedia : V. 1.Aardvark - Blood.
The New Junior World Encyclopedia : V. 2.Boadicea - Crocodile.
The New Junior World Encyclopedia : V. 3.Cromwell - Ethiopia
The New Junior World Encyclopedia : V. 4.Flies - India
The New Junior World Encyclopedia : V. 6.Mayfly - Ostrich.
The New Junior World Encyclopedia : V. 7.Ottoman Empire - Schools.
The New Junior World Encyclopedia : V. 8.Science - Uniforms.
The New Junior World Encyclopedia : V. 9: Union - Zworykin.