Complex sentence: Brown's non-fiction includes "On Fire" (1995), on the subject of his 17 years (1973-1990) as a firefighter, and "Billy Ray's Farm" (2001).
Split into simpler sentences: Brown's non-fiction includes "On Fire" (1995), on the 17 years (1973-1990) he spent as a firefighter. Other non-fiction includes "Billy Ray's Farm" (2001).