Formal Geometry and Bordism Operations

2018

Frommer's Colorado

2009

Frommer's Denver, Boulder & Colorado Springs

2005

Frommer's EasyGuide to National Parks of the American West

2014

Frommer's Montana & Wyoming

2004

Frommer's Utah

2007

Frommer's Yellowstone & Grand Teton National Parks

2001

Ramble

A Field Guide to the U.S.A.

2006

Ramble Colorado

A Wanderer's Guide to the Offbeat, Overlooked, and Outrageous

2008

Roadside Americana

2004

Secret Denver

A Guide to the Weird, Wonderful, and Obscure

2020

Space Bastards Vol. 2

The Cost of Doing Business

2021

Space Bastards Vol. 8

2021

Space Bastards Vol.10

Special Delivery

2022

Space Bastards, Vol. 1

Tooth & Mail

2021

The Great American Road Trip

2006