Note [Back copies]

Miscellaneous back copies of the PROCEEDINGS can be obtained from the Institute of Radio Engineers. Single copies from Volume 1 to Volume 14, inclusive, sell for $1.50 each; from Volume 15 to Volume 18, for $1.00 each. Bound volumes for 1922 are available at $11.00 per volume; for 1929, 1930, and 1931 at $12.00 per volume. In every case members are entitled to a 25 per cent discount. As the supply of back issues of the PROCEEDINGS is small and is constantly fluctuating, there is no list of available copies printed here. In each issue of the PROCEEDINGS, on the page titled General Information, there appears an up-to-date list of all copies that may be obtained from the Institute.