Delhi: Cincinnati Westside, authored by Christine Mersch is a great book from Arcadia Publishing that Chronicles Cincinnati's Westside. This book is profusely illustrated with hundreds of vintage photos, drawings and advertisements. This book really gives a good historical perspective of the area and I recommend it. Can be purchased directly through Arcadia Publishing. http://www.arcadiapublishing.com/ or Amazon or Ebay if you are looking for a used copy. Publishers price is 19.99.
Arcadia Publishing has numerous books on Cincinnati History and life and is a great resource tool for research.