National Audubon Society Trees of North America

Updated for the first time in decades, this unparalleled reference work is the most comprehensive and authoritative guide to the trees of North America and now includes the latest information on conservation status and the effects of climate change--from the creators of the world's most trusted field guides, a go-to source for millions of nature lovers

"[Makes] it easier than ever to figure out which trees are in your yard or are along the trail while you’re hiking. Every nature lover needs this guide." —Portland Book Review

This handsome volume is the result of a collaboration among leading scientists, scholars, taxonomic and field experts, photo editors, and designers. An indispensable reference, it covers more than 540 species, with nearly 2,500 full-color photographs--including images of the bark, fruit, and flowers, as well as photos that illustrate leaf shape and seasonal color changes.
 
For ease of use, the book includes a glossary, a robust index, and a ribbon marker, and is arranged according to the latest Angiosperm Phylogeny Group classification system—with trees sorted by taxonomic orders and grouped by family, so that related species are presented together. Readers will appreciate the crisp detail of the photographs; range maps (reflecting the impact of climate change); physical descriptions; and information on fruit, habitat, uses, and similar species. The guide includes an important new category on conservation status and essays by leading scholars who provide holistic insights into the world of trees.
 
Whether putting a name to the towering conifers spotted along a hike or getting to know the trees that grow in the backyard, readers will come to rely on this work of remarkable breadth, depth, and elegance. It is a must-have reference for the library of any nature lover, and is poised to become the number one guide in the field.

Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs