Mallory-Yaxley Radio Encyclopedia, famous and rare 6th edition covering all radios from the beginning to and including postwar models to 1948. A must in every library to search schematics for radios without model numbers, chassis numbers, etc.
It has been said this also has the Riders index.
Follow this link, and you can dwonload the index for vol 1-15, vol 16-22, and vol 23, plus any riders manual from 1-23:
http://hertzmail.com/Riders-vols/
Doug
Based on the cover of each volume you listedf, they are as follows:
Vol. 7 Late 1935 to Late 1936
Vol. 9 October 1937 to October 1938
Vol. 10 October 1938 to August 1939
Vol. 13 Late 1941 to Early 1942
I hope this helps, there is no index referencing years that I am aware of, the years are simply stated on the cover of each volume.
Doug
http://www.electronixandmore.com/articles/riders.html