Good news! Linhof rollfilm backs for 4x5" attach to any camera that takes a Graflok/International style back (meaning the groundglass panel is easily removable, and there are slides that hold the rollfilm back in place), so it doesn't require a Linhof (unless it's a 2x3" Linhof back, which only works on Linhof 2x3" cameras, or a Linhof Alpa back, which it probably isn't, or you would have an Alpa to go with it). Just put it on a Graphic or Wista or just about any 4x5" camera of recent vintage with a Graflok back, add a pinhole to the lensboard, and you're good to shoot.