A magazine started in 1925 devoted to civil engineering and construction in the western US.

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1929: Oct 10 Oct 25 Nov 10 Nov 25 Dec 10 Dec 25
1930: Jan 10 Feb 10 Feb 25 Mar 10 Mar 25 Apr 10 Apr 25 May 10 May 25 Jun 10 Jun 25 Jul 10 July 25 Aug 10 Aug 25 Sep 10 Sep 25 Oct 10 Oct 25 Nov 10 Nov 25 Dec 10 Dec 25
1935: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1936: Jan Feb Mar Apr May Jun Jul
1940: Sep Oct Dec
1941: Jan Mar Dec
1942: Jan Aug Sep Oct Nov
1943: Jan Feb Mar Apr May Jun
1944: Apr May Jun Jul Aug Sep Oct Nov Dec
1945: May Jun Jul Aug Sep Oct Nov Dec
1946: Jan Feb Mar Apr May Jun Jul Sep Oct Nov Dec
1947: Feb Mar Apr May Jun Aug Sep Oct Nov Dec
1948: Jan Feb Mar May Jul Oct
1949: Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1950: Feb Mar Apr May Jun Jul Aug Sep Oct Dec
1951: Jan Feb Mar Apr Jun Jul Aug Sep Oct Nov Dec
1952: Jan Feb Mar May Jun Oct Nov
1953: Dec
1954: Jun
1955: Jan
1956: Jul
1958: Jun Jul Aug Sep Oct Dec
1959: Feb Mar Apr May Aug Oct Nov Dec
1960: Feb Mar Apr May Jun Jul Aug Sep Oct Nov