The Knights of Arthur

The Knights of Arthur (1958) is a science fiction story by Frederik Pohl about a strange being and its human servants.
Excerpt froThe Knights of Arthur (1958) is a science fiction story by Frederik Pohl about a strange being and its human servants.
Excerpt from the book:
"I locked the door of the hotel room. Arthur was peeping out of the suitcase at me.
I said: "I'm back. I got your typewriter." He waved his eye at me.
I took out the little kit of electricians' tools I carried, tipped the typewriter on its back and began sorting out leads. It was a slow and dull job. I didn't have to worry about which solenoid lead went to which strand—Arthur could sort them out. But all the same it took an hour, pretty near, and I was getting hungry by the time I got the last connection taped. I shifted the typewriter so that both Arthur and I could see it, rolled in a sheet of paper and hooked the cable to Arthur's receptors.
Nothing happened.
"Oh," I said. "Excuse me, Arthur. I forgot to plug it in."
I found a wall socket. The typewriter began to hum and then it started to rattle and type."