Water and Sky: Challenging the Northern Wilderness (Laurel Expedition)

Tinker, Tailor, Soldier, Spy

Catch a Falling Spy

Hidden San Francisco and Northern California: The Adventurer's Guide (Hidden San Francisco & Northern California)

The Spy in Question (Ulverscroft Large Print Series)

Northern Stars: The Anthology of Canadian Science Fiction

Black Metropolis: A Study of Negro Life in a Northern City

Northern Edge

Twinkle, Twinkle Little Spy

Epitaph for a Spy (Vintage Crime/Black Lizard)