Iowa Code § 301.10: Textbook suppliers.

A person or firm desiring to furnish books or supplies under this chapter shall do all of the following:

1. Make available samples of all textbooks accompanied by lists giving the lowest wholesale and contract prices for the textbooks.

2. If requested by the department of education, make available a machine-readable version of a textbook purchased by a school district to the department in the best available format for electronic braille translation.