Frommer's easyguide to Seattle, Portland & the Oregon coastDonald Olson · First published 2015Open the Tome
Germany - Frommer's EasyGuideFrommer Media, Stephen Brewer, Donald Olson · First published 2014Open the Tome
Europe For DummiesDonald Olson, Liz Albertson, Cheryl A. Pientka, George McDonald, Darwin Porter, Danforth Prince, Neil Edward Schlecht, Tania Kollias, Mark Baker, Dardis McNamee, Maggie Childs, Bruce Murphy, Alessandra de Rosa · First published 2009Open the Tome
Best day trips from LondonBrewer, Stephen., Stephen Brewer, Donald Olson · First published 2006Open the Tome
Frommer's Irreverent Guide to London (Irreverent Guides)Donald Olson · First published 2004Open the Tome
