Get ready: There’s a poster museum coming to New York City. Poster House has been in the works for some time, and the time is ripe. The West 23rd Street downtown location is not the typical gallery or museum row, but its centrality in Manhattan will be a boon for casual and committed poster fans. Poster House’s website goes live today, and I spoke with director Julia Knight, curator Angelina Lippert, and board president Val Crosswhite about their plans and goals. Without furt