HCO: Newbie questions

[Steven Whatley <swhatley@blkbox.COM>]

OK, back to Hammond organs.  I have been posting questions but not getting
any answers.  I have a Hammond Chord Organ model# S6 Form# B4 Ser# 74086 
which was purchased in 1965.  The organ is as old as I am.  Actually, it 
is almost a year older.

Right now, I am just after basic information such pricing, history, 
schematic, old newsletters, etc.  Is it adviseable to start stocking
up on replacement vacuum tubes?  Is there a list of song books published
for the HCO?

I realize these are a lot of questions.  A FAQ or book references would be
very helpful.

Thanks,
Steven Whatley