Tatiana Romanova was the Corporal of State Security in the Soviet Union. She was recruited by Rosa Klebb to lure James Bond into Istanbul so that they could steal the Spektor decoding machine and escape together. The real plan was for henchman Red Grant to kill them before they got away, stealing the Spektor for themselves, with the blame being on Bond.
I hope you have just as much finding them as I did hiding them. If you find any of the caches along the way in need of attention, please contact me via my GC.com profile.