What has the author Douglas Walkington written?

Douglas Walkington has written:

'United Church ministers, 1925-1980' -- subject(s): Clergy, Directories, United Church of Canada

'Ministers of the United Church of Canada, 1925-1940' -- subject(s): Clergy, Directories, United Church of Canada

'Churches of the Presbyterian Church in Canada, 1875-1925. Saskatchewan Conference' -- subject(s): Canada, Presbyterian Church in Canada, Saskatchewan Conference

'Ministers of the Presbyterian Church in Canada, 1875 - 1925 : ministerial summary from acts and proceedings of the General Assembly' -- subject(s): Clergy, Directories, Presbyterian Church in Canada

'Methodist ministers in Canada, 1903-1925' -- subject(s): Clergy, Directories, Methodist Church, Methodist Church (Canada, Newfoundland, Bermuda)

'Presbyterian ministers in Upper & Lower Canada (Ontario & Quebec) prior to formation in 1875 of the Presbyterian Church in Canada' -- subject(s): Clergy, Directories, Presbyterian Church

'Churches of Presbyterian Church, Canada. Maritime Synod. 1875-1925' -- subject(s): Presbyterian Church