I've been told by a UK carrier that eleven digit numbers beginning
> 09 are in use in Canada and diallable by the public - 1 09x xxx xxxx
On 9/23/1962, the New York Times had a very detailed article on the conversion to All Number Calling (ANC), consumer opposition and frustration to ANC, and future prospects of telephone systems. This may answer some of your questions of how the system evolved. The NYT is available on microfilm or CDROM in many large libraries.