Spark plug information needed

[bikerdds]

In preparation for an article for the club magazine on Indian spark plugs, if you have the following items, please let me know. Items needed for pictures only.
Edison-Splitdorf spark plug cross reference, or any other spark plug cross reference of the 30-40's that crosses with Edison-Splitdorf.
Champion two ring plug with brass top [30-40's plug], J-11 or J-12
Champion two ring plug, may or may not have brass top,[30-40's, JA-11
Edison Z-38
Edison Z-43
Any advertisement,referrence, or technical information what so ever on Indian-Edison 56
Marty Megregian

[23JDCA 808]

You might try this site: http://www.spcoa.net
Wayne McPherson used to have spark plug on http://www.geocities.com/SparkPlugSite on Geocities but it is gone.

[Tommo]

This is a 1915/16 Splitdorf ad that is A3 in size and printed on a linen type paper.
My scanner is only A4 so I've had to do it in two hits.
Is this the sort of thing you want?

[bikerdds]

Nice original advertisement Tommo!
Looking for a spark plug cross reference that had Edison plugs as well as Champion. Need pictures of actual plugs mentioned, not advertisements. Thanks! Marty

[Tommo]

Any advertisement,referrence, or technical information what so ever on Indian-Edison 56

That'll teach me for not reading the whole sentence and just the any advertisment bit.
Sorry about that.