Perhaps the best resource for surface images of Venus (along with fascinating image reconstruction) is Don P. Mitchell's page: http://mentallandscape.com/C_CatalogVenus.htm
Another fascinating tidbit: the Soviets also performed the first (and to date, only) deployment of a balloon probe on another planet: http://en.wikipedia.org/wiki/Aerobot#The_Venus_Vega_balloons
He mentions on his copyright page[2] that he studied Russian books/papers, befriended & interviewed Russian scientists, dug up rare photographs, and even processed original spacecraft data with custom C++ code to create some of the images!
I look forward to his book; does he have an ETA on the publication date?
[1]: http://www.mentallandscape.com/V_Venus.htm [2]: http://www.mentallandscape.com/Copyright.htm
"Shortly after passing into daylight, the Vega-2 aerostat plunged several kilometers, to a level of 0.9 atmospheres, dangerously close to the lower limit of its stable float zone. After the end of signal, the balloons probably overheated and burst, somewhere on the daylight side of Venus."