If you are like many writers you have struggled with writing consistently in the same tense. The stories in this set (pdf) were written in 12 tenses (though I counted only 11). The stories, by David Yost, are from the current issue of Pleiades: A Journal of New Writing, published through subscription by the University of Central Missouri. However, they have some teaser stories, articles and poems online, including the Yost stories.