An episode of The Engines of Our Ingenuity, numbered 1623, is available and features the textbooks of two individuals, Joel Dorman and Esther Steele. This episode is described as an opportunity to meet two very special teachers.

Further details about the episode and its content can be found through the source. The episode appears to focus on the work and contributions of Joel Dorman and Esther Steele, highlighting their textbooks.

The source provides more information about this episode, including the context and significance of the textbooks and the teachers being featured.