From 1946 to 1975 Rav Miller was the rav of the Young Israel of Rugby in the East Flatbush section of Brooklyn. In 1975 the shul relocated to Ocean Parkway near Avenue R and was subsequently called Bais Yisroel Torah Center. Rav Miller served as the rav there until his passing in 2001.
What follows below should be read in light of what Orthodoxy in the United States was during the forties, fifties and sixties. Orthodoxy certainly looked at least 'externally' different than it does today. In general, Orthodox Jews dressed in a fashion similar to their gentile neighbors. Most Orthodox men were clean shaven.
The third yahrzeit of HaRav Avigdor Miller, zt"l, occurred a few weeks ago. I had the privilege of knowing him as a talmid and on a personal level for more than 30 years, from about 1970 until his passing in 2001.