There is an email discussion group, hosted by Yahoo Groups, that is devoted to the subject of Combo Organs (well, the discussion does frequently veer into other related areas, usually other vintage electric, electronic and electro-mechanical keyboard instruments). It only takes a minute or so to sign up, and you'll get emails every day, usually about 10-15 on average. This is the best place to share ideas, ask questions, and learn more than you'd ever thought you could about combo organs. If you sign up, please also familiarize yourself with the Yahoo home page for the group. There you can search the archives of messages, so you can find answers to topics that may have been discussed months ago. There's also a Files and Photos section, where members can post pictures and other stuff- there's even a few sets of schematics and some product brochures. Also check out the Polls while you're there, and register your vote on various Combo Organ related (and not-so-related) topics. If you don't want to get the emails every day, you can sign up for the daily digest, which is a single email containing all the discussion from the previous day, or you can go for web access only, where you can look at the files, search the archives, and post messages, but you won't get replies via email.
To sign up, fill in your email address and click on the link below. You MUST include the short "Comment to Owner" telling why you want to join the group. It must have something to do with combo organs, even if all you have is an interest in learning more, or reading what others have to say. Users attempting to join without leaving a comment, or leave a plain generic comment such as "hi" or "Please let me join", will be denied. I do this because there have been incidents of spammers using bots to join Yahoo groups and hawk their junk, or collect email addresses. Do not ask questions in the "Comment to Owner", they will go unanswered. If you have a question, join the group first, then post your question.
If you sign up with the link you'll only get the emails. If you want access to the message archives, files, polls, etc, you'll need to sign up for a Yahoo id (if you don't already have one). You can do that by clicking here. Once you have a Yahoo id, you can link it to the email address you used to sign up for the group by clicking here.
And for those of you who prefer Spanish-only, my friend Carlos, from Argentina, has started a similar discussion group in that language. I only understand a little bit of Spanish (Carlos and I correspond using www.freetranslation.com) so please don't ask me questions about it.
SONIDO HIPNOTICO: (http://ar.groups.yahoo.com/group/sonido-hipnotico) Es un sitio en idioma Español, para aquellos que gustan de los “órganos de combo”. Allí tenemos un lugar para reunirnos, mantener correspondencia, hacer consultas y colocar los datos y las fotos de los órganos de nuestra colección.-