Just wanted to point out one way to get to a specific Genii issue within a volume on the iGenii Archives via Ask Alexander.
Use MagicPedia to find it's page number.
For example, if you want to get to the June 1939 issue (Vol.l 3, No. 10), checking http://geniimagazine.com/magicpedia/Genii_1939_June says it starts on page 321.
Browse to that volume on AskAlexander, type "321" into the page number box on the right and hit "return".
Sometimes the page numbers in AskAlexander do not match up exactly with the page numbers in Genii, but it will usually get you within a few pages of the cover.
We don't have all the Genii magazines indexed yet, so if anyone else has time to help out, please join us in updating MagicPedia!