I'm stumped, and probably only someone with a good knowledge of the
cosmological literature can help me out. 

A while back, I ran across a reference to Dicke pointing out that the
Lemaître model with a long quasi-static (almost) coasting phase (which
some advocated back in the 1960s to explain what turned out to be a
bogus overdensity of QSOs around a certain redshift) would have to be
fine-tuned in order to work. 

That is true, of course. 

The remark is interesting, and somewhat ironic, because, as Kayll Lake
later pointed out, in a model with a positive cosmological constant
which expands forever (the coasting models are a subset of these), one
needs fine-tuning to get a LARGE value of Omega, which is essentially
the reverse of the fine-tuning argument with the flatness problem as put
forward by Dicke and Peebles (where they implicitly assumed Lambda=0). 

I'm pretty sure I saw it online somewhere, maybe in a paper but perhaps
in a book, probably a textbook or semi-popular book or article, which,
if I recall correctly, also contained photographs of some of the people
mentioned in the text.  I don't know if there was a reference to
something written by Dicke or if this was a report of a remark at a
conference or in a private conversation. 

Does anyone have any idea what this book or article could be and/or what
the source of the statement by Dicke is? 

I've spent several hours searching for it online (I originally read it
online, so I'm sure that it is there somewhere) a while back, but to no
avail.  I've asked several people whom I thought might know of it (or
perhaps might even have written it), but no-one can identify it. 

The same argument is on p. 318 of Peebles's Principles of Physical
Cosmology, in the first full paragraph after Eq. (13.22), but that's not
what I'm looking for, rather the original reference to Dicke (as opposed
to invoking coincidence arguments in general).