I'm not sure exactly what 'Phillips Mill the full story' refers to, but a mill named Phillips Mill could have a long and interesting history. It might have been involved in milling various products like flour or lumber. There could be tales of the people who owned it and the workers who toiled there.
Well, it could be a fictional 'old mill story'. It might involve a mystery that took place in or around the old mill. For example, there could be a hidden treasure in the mill that the characters are trying to find. Or perhaps it's a love story where two people meet at the old mill and their relationship unfolds against the backdrop of the mill's rustic charm.
Run of the mill fan fiction can be seen as the common, garden - variety type of fan - written work. It doesn't stand out as being extremely innovative or different. These are the fan fictions that are likely to use the well - known elements of the source material in a rather straightforward way. They might not introduce new and complex character developments or plot arcs. Instead, they rely on the familiarity of the original work to draw in readers who just want a simple, uncomplicated addition to the story world.
No, Howard's Mill is not a true story. It's likely a product of the author's imagination or inspired by various fictional elements. True stories typically have verifiable sources and documentation, which is lacking in this case.