Don Howard

Scientific Philosophy

2023

Einstein

2000

Albert Einstein

2013

Will Visits the Big City

2015

Treasure of Al-Raqtan

2019

The Drive

2002

Texas Gardening

1998

Sting in the Khybers Tail

2021

Moving Dirt

1978

McMillen's Texas Gardening

1998

Fun and Activities Book

2015

Einstein the Formative Years, 1879–1909

2014

Einstein the Formative Years, 1879-1909

2014

Art, Science, and Strategy of Longevity

2025