Manhattan Pipe Co. was one of many NYC companies in the late 19th-early 20th century. They made nice looking good quality pipes. It's pieces of Manhattan advertisements and catalogs that gave me some idea of how styles of pipes changed in that era. Early on you see ornate rim caps and bands. The better pipes have amber stems. A little later the decoration is simpler, more elegant. And Bakelite is used for everything but the bowl interior. The company was bought out in about 1920. I think they were absorbed into S.M. Frank. Here's two examples. First is an all Bakelite cased pipe with a screw in Meerschaum bowl. It's a fairly large pipe circa 1920. Here's an earlier Bulldog. Maybe 1900.