My reply: 

 It seems VERY strange to me that you have not noticed that Rizhsky Rail Terminal makes reference to: 

 "As well as being an active rail terminal it also houses the Moscow Railway Museum." 

 There is even a photo of a preserved class O locomotive on that page. 

  
 Moreover, a internet search will tell you that there is the Museum of the Moscow Railway and the Moscow Railway Museum. In fact wikipedia will tell you that! It is clear that one is at Rizhsky and the other at Paveletsky Rail Terminal. There are 2 Railway museums in Moscow. Both have substantial collections and  research material. Rather typical I think for museums in a capital city. All of which will be helpful to the reader and researcher.  You will find photos of the contents of these museums on Wikimedia Commons and on the internet generally, you may be surprised to find that CONTRARY TO YOUR ASSUMPTION Rizhsky Rail Terminal has an example of most types of Russian locomotive. WIKIMEDIA COMMONS EVEN HAS SOME PHOTOS!!! In fact it is the second national museum after a Varshavsky Rail Terminal. The museum of the Moscow Railway has models of most type of Russian locomotive, something which is blatantly obvious from the wikipedia site that I constructed. There are plenty of photos of such models. 

 So why criticise when you clearly have not been anywhere near Moscow and I in fact live here? 

 Why accuse me falsely of somehow spreading SPAM? 

 Why talk about irrelevance when the relevance is blatantly obvious from the material already on wikipedia. 

 IF YOU WANT PEOPLE TO DONATE PHOTOS AND INFORMATION I SUGGEST YOU START ADOPTING  A CONSTRUCTIVE, POSITIVE AND OPEN MINDED ATTITUDE TO THINGS YOU CLEARLY KNOW LITTLE ABOUT. Finally read the information which is on wikipedia before criticising and falsely accusing people of spreading SPAM 

 I AWAIT A FULL AND COMPLETE APOLOGY.