As a relatively infrequent airline traveler, packing for distant assignments and trips always presents me with an organizational challenge. Clothes, equipment, and supplies must be tracked down and stuffed into my cheap luggage, with frequent checks of the TSA website to ensure that I can unpack and repack my carryons with a minimum of hassle during my pass through security. As bibliophiles know, though, one of the most crucial aspects of air travel is choosing the right books to take with you. As much as I was tempted to bring along New Perspectives on Horned Dinosaurs on my recent trip to Montana and Wyoming, the massive symposium volume would have required a