Marvel's The Mighty Thor Omnibus collects Journey into Mystery #83-120 and Annual #1. Like other Marvel Omnibuses, the production quality is high: solid binding, thick low-gloss paper with bright colors, and boards in leather with silver foil-stamping. Unlike some of the other Omnibuses, however, this one has little bonus editorial content. Stan Lee's frankly un-interesting introductions to the previously published Marvel Masterworks editions of Thor are scattered throughout. Some bonus artwork functions as an afterword, but it too is rather unremarkable. Perhaps the best addition (for collectors and scholars, at least) is the reproduction of the original Thor letters pages; unfortunately, the letters page didn't debut till issue #109, so the reproductions don't start appearing till half-way through the Omnibus.
The majority of the art is done by Jack Kirby. In general, it's not his best work, though the fantasy-themed Tales of Asgard back-up stories feature some beautiful design and layouts. Stan Lee's writing also lacks some of its usual pizzaz, though it gets better towards the end of the Omnibus. Loki appears throughout, as does Odin and Heimdall. The collection also features the first appearances of Mr. Hyde, the Enchantress, Baldur, and the Cobra. For the most part, these are bland characters with hackneyed, "hero" or "villain" personalities. Thankfully, the Norse characters receive some additional development in the excellent Tales of Asgard stories, which feature some of the best writing in this Omnibus.
Ultimately, this is a must-have for collectors, unless you already own the Marvel Masterworks editions of Journey into Mystery. For more casual readers or those new to Thor comic books, this will probably be too old-fashioned to provide much pleasure. Instead check out Thor by J. Michael Straczynski Omnibus, collecting his more recent adventures, or Thor by Walter Simonson Omnibus, collecting Simonson's legendary work on Thor in the 1980s.