Local author and photographer Peter Marbach will launch his new book “Healing the Big River: Salmon Dreams and the Columbia River Treaty” on Wednesday at Hood River’s Columbia Center for the Arts. The book combines Marbach’s photography with essays from people concerned about the river’s future, many from First Nations. Marbach says he wanted the voice of the book to be from the people of the river. Marbach will give a presentation at Wednesday evening’s book launch, which begins at 7 p.m. in the Columbia Center for the Arts. There is a $10 suggested donation with proceeds benefiting the Center.