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"The Hammond Organ: Beauty in the B" by MarkVail (1997) is the only available reference book on HammondOrgans that I know of. Really, it's really not much of a reference book --- more of a "coffee table" book.

You can buy it on-line from Amazon . (Or Barnes & Noble.) ('Help support HammondWiki!' If you use the previous links to order the book, I get a share of the profits.)

It is rumored to contain numerous errors, some of which are detailed here.

This is what I found on the first pass. I'll list more later. Feel free to correct the corrections -- JeffSimpson

Thanks for adding this list Jeff. I've just fixed the markup a bit. -- JeffDairiki

Foreword

The A-100 is not a locking top console.

Illustrations

Page 14: Caption is describing the Hammond organ replacing pipe organs. Picture shows a pipe installation.

Page 42: Omission of drawbar knob differences in color and stamped harmonic designation.

Page 43: Keys C# through A call up drawbar settings (presets), not C through A. C is the cancel key.

Page 46: The tab shown is not the overall percussion volume control. It is the overall volume control.

Page 71: The A-100 series does not have a stereo reverb system. The B-3/C-3 and the A-105 are not identical component-wise. There are wiring, component, and hardware differences.

Page 73: There is only a 25 pound difference between the models described. This includes pedal clavier and bench, which are not carried in one piece with the instrument.

Page 99: The pictures of a Grand-100 being assembled have nothing to do with buying and maintaining a B-3.

Page 118: A French Provincial A-100 is an A-102.

Page 132: Most players left the covers off in a futile attempt to be heard next to a guitar/Marshall stack(s).

Page 133: B-3, XB-3 what's the difference, right?

Page 131: Can you tell the difference between a 145 and a 142 from this angle?

Page 141: Ditto.

Page 142: Top - This is not a 147. Bottom - This is not a 122RV.

Page 198: I dunno, looks like an illustration to me, not a B-3 right out of it's shipping crate.

Text

Page 141: The 122 and 147 have identical connectors. B+ is plate supply, not grid supply. The 147 being unbalanced does not induce noise, it make the system susceptible to noise from other sources.

Page 142: Major components are the same between a 122 and a 147 output stage. There are differences between older 122 and 147 amps. I can't tell you about the later HS products.

Page 145: The 60 and 70 were also sold for use with the Wurlitzer 200 piano.

Page 150: 122 amplifiers use 2 12AU7's but only one of them is used in the preamp. Half of the other one switches the relay. The other half of this tube is not used.

Page 216: AWSOP wasn't recorded with a B-3.

Page 216: Rhoda Scott is sitting at a Hammond B-3000, not XB-3.

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