This Sunday afternoon I’ll be discussing my book “Overburden: Modern Life on the Iron Range” on Twitter. (@minnesotabrown) “Overburden,” a humor/historical work of creative nonfiction, attempts to understand our unusual rust belt region as it crosses into a new era. The Twitter chat will occur from 2-4 p.m. Sunday on the hashtag #LPBooks. The talk is sponsored by a new arts and culture site, The Local Pigeon.