But, once or twice a week, Mike the Angel liked to take off and prowl around Radio Row, just shopping around. Usually, he didn't work too late, but, on this particular afternoon, he'd been in his office until after six o'clock, working on some papers for the Interstellar Commission. So, by the time he got down to Radio Row, the only shop left open was Harry MacDougal's. That didn't matter much to Mike the Angel, since Harry's was the place he had intended to go, anyway. Harry MacDougal's establishment was hardly more than a hole in the wall--a narrow, long hallway between two larger stores. Although not a specialist, like the proprietor of Ye Quainte Olde Elecktronicks Shoppe, Harry did carry equipment of every vintage and every make. If you wanted something that hadn't been manufactured in decades, and perhaps never made in quantity, Harry's was the place to go. The walls were lined with bins, all unlabeled, filled helter-skelter with every imaginable kind of gadget, most of which would have been hard to recognize unless you were both an expert and a historian. Old Harry didn't need labels or a system. He was a small, lean, bony, sharp-nosed Scot who had fled Scotland during the Panic of '37, landed in New York, and stopped. He solemnly declared that he had never been west of the Hudson River nor north of 181st Street in the more than fifty years he had been in the country. He had a mind like that of a robot filing cabinet. Ask him for a particular piece of equipment, and he'd squint one eye closed, stare at the end of his nose with the other, and say: "An M-1993 thermodyne hexode, eh? Ah. Um. Aye, I got one. Picked it up a couple years back. Put it-- Let ma see, now...." And he'd go to his wall ladder, push it along that narrow hallway, moving boxes aside as he went, and stop somewhere along the wall. Then he'd scramble up the ladder, pull out a bin, fumble around in it, and come out with the article in question. He'd blow the dust off it, polish it with a rag, scramble down the ladder, and say: "Here 'tis. Thought I had one. Let's go back in the back and give her a test." On the other hand, if he didn't have what you wanted, he'd shake his head just a trifle, then squint up at you and say: "What d'ye want it for?" And if you could tell him what you planned to do with the piece you wanted, nine times out of ten he could come up with something else that would do the job as well or better.