River of Ink

With its title harkening back to the sack of Baghdad in 1258—when the Tigris ran black with the ink of books flung into the water by Mongol invaders—River of Ink is a collection of essays that range widely across time and cultures to illuminate the role of literature and art throughout history. Christensen draws from a panoply of subjects, from the writings of prehistoric Chinese cultures known only through archaeology to the heroic efforts of contemporary Afghanis to keep the legacy of their ancient culture alive under the barrage of endless war.

Christensen's encyclopedic knowledge of world art and vast understanding of literature allows him to move easily from a discussion of the invention of moveable type in Korea, to Johannes Kepler's search for the harmony of the spheres, to the strange journey of an iron sculpture from Benin to the Louvre. Other essays cover the Popol Vuh of the Maya as exemplum of translation, the pioneering explorations of the early American naturalist John Bartram, and the balletic works of Louis–Ferdinand Céline.

It is Christensen's gift to see the world whole, to offer a wealth of connections vital for us as citizens of a rapidly globalizing world.

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