NEWS H.E. Callahan Project Wins National LEED Homes Award Jun 28th, 2016 details H.E. Callahan Acquisition: Press Release Jun 10th, 2016 details Maine Children's Home receives donation from H.E. Callahan Nov 21st, 2015 details Bangor Public Library Addition + Renovation Jan 17th, 2014 details H.E. Callahan Selected as Construction Manager! Jan 8th, 2014 details H.E. Callahan Receives Award Nov 14th, 2013 details