Awesome shots! I'm a Duluthian myself, and I would love to post some of my pictures here, but they're too large, unfortunately.
Here are my albums though.
http://imgur.com/a/CkCFG
Duluth: giants of downtown.
http://imgur.com/a/bzk74#0
Duluth II: details of downtown, Carnegie Library, Old Central, and Canal Park.
http://imgur.com/a/wmVwC#16
Duluth III: Medical Arts Building "observation deck", Maurices building construction (which continues through following albums), Civic Center, Old Downtown/Lake Place, and Bayfront Park.
http://imgur.com/a/Oex1x#0
Duluth IV: Enger Peak (with panoramas!), Central Hillside, Old Downtown, and facades/atriums.
http://imgur.com/a/em3p8
Duluth Misc: pictures that either did not fit in other albums or were taken on days that were not photo sessions. Includes Medical Arts "observation deck", moored ships, shoreline, night scenes, and recent images, the most recent taken yesterday.
http://imgur.com/a/YZVWc
Maurices Construction: detailed accounts of McGough's construction of Maurices' new 11 story headquarters building.