Volume 7 features covered hoppers built by Trinity Industies, Trinity Rail Group (Trinity's new name after merging with Thrall Car Manufacturing in 2000) and TrintyRail (renamed in 2004). There are over 675 images of 29 models of 2, 3, 4 and 5-bay cars built between 1978 and 2006. Along with roster and detail views, there is dimensional data for each model, as well as series information, build dates, previous owners, information on the types of hand brakes, outlet gates, trucks, paint dates, etc. Also included is an abbreviation key, an AAR Type Code key and a bibliography. 738 pages.

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