Home / Maps / ... / Chicago Blue Line Map Taken From The Most Popular. 7Chicago Blue Line Map Taken From The Most Popular. 7 by Harley On Saturday, December 8th, 2018 5 stars 4 stars 3 stars 2 stars 1 star 74 heart(s) out of 100 from 15 user(s) Chicago blue line map taken from the most popular. 720913 ~ Chicago Blue Line Map. Archived on maps and published on December 8th, 2018 by Harley is one of best maps ideas with 74/100 rate from 15 user. Check our gallery below and get inspired!