PITTSBURG, Kan. —Fall is peeking around the corner, and the Pittsburg ArtWalk, the semi-annual downtown art festival, is ushering it in with a big party. Starting at 5 p.m. Friday, Sept. 20, Broadway Street from 4th to 7th street will fill with artists, musicians, wordsmiths, merchants, organizations and food vendors. More than 40 artists will have their creations for sale alongside 23 other crafty vendors selling their wares.