I noticed this yesterday when doing the EV (a fun puzzle despite the 'missing trousers' I thought.)
I was looking up 'Russia' in CCCC and noticed a stream of ?typos? ?misprints? under the subheading 'Russian landmarks include'... as follows:
"07 Kreml, Siberi ...
08 Caucas ...
09 Gorky Pa .....
12 Palace Squar, Summer Garde, Summer Pala"
I'm no conspiracy theorist but it gave me a mild Salisbury Cathedral clock moment... I've only found one or two other (minor) errors in this book and found it strange that there should be so many peculiar foreshortenings under one notable heading.
Or could this be a Bletchley Park style code for us to solve?!
(Apologies if this has already been covered here: I couldn't find it in an albeit peremptory search).