Spain, the unfinished revolution is superb. Written by a member of the international brigades. it floats around the web as a pdf. It is sympathetic to all sides defending the republic, but it is critical of the myths that have been handed to us about anarchism and the Orwellian view of events. it is written from a pro marxist position, but it praises the anarchists when necessary. for the author, it was a people's war, and political affiliation was secondary to defence of the republic.