Book excerpt: Brian Peterson and Kerri Westenberg, both native Minnesotans, share a deep affection for their homeland. That sensibility underlies every aspect of the State of Wonders project, which began as a series in the Travel section of the Star Tribune. Through their combined vision, springtime awakes in the northwest with prairie chicken dances and unfurling, delicate plants. Tallgrass prairies and historic American Indian lands trumpet the full glory of summer. Autumn colors dazzle the Mississippi River Valley, and winter in the Arrowhead region holds both harsh cold and exquisite beauty. Collectively, their work illuminates Minnesota's natural glories.