NMT
Ad Hub Digital Media Tools & Documentation

updated Ad Hub Online Ad Specs PDF - Based on IAB, Google and Yahoo Ad Specs these are the same across all properties

updated Ad Hub Online Animated Ad Specs PDF - Based on IAB, Google and Yahoo Ad Specs these are the same across all properties

new Ad Hub Online Video Specs PDF - Based on IAB Video Specs these are the same across all properties

Engine 212 Ad Specs - Specs for Engine 212 creatives | Also: PDF

Morris Property Ad Specs

Gatehouse Ad Specs

new Google AdWords Specs PDF - Google AdWords (aka: Google Ad Exchange and Google Display Network - GDN) are used under the Engine 212 umbrella for some properties.

Interactive Advertising Bureau (IAB) Guidelines, Standards & Best Practices - Links to key pages

IAB Display Ad Unit Guidelines - Links to key ad unit info

IAB New Ad Portfolio - Lots of new sizes are proposed for 2017. Sizes change from fixed pixel sixes to aspect ratio sizes (4:1, 6:1, 1:2, etc.)

Yahoo Ad Specs - Most applicable to us are the Display and Mobile ads