The New Zealand Railways Magazine, Volume 3, Issue 7 (November 1, 1928)
N.Z. Railways Magazine
N.Z. Railways Magazine.
The Audit Office, Wellington, N.Z., 7th June, 1928.
I hereby certify that after investigation of the publisher's lists and other records the average circulation of the New Zealand Railways Magazine for the 12 months ended May, 1928, is in excess of 20,000 copies per month during the whole of that period.
Controller and Auditor General.