|Soyuz 4 docks onto Soyuz 5 (by @sciencemug)|
[Pictures of the soviet cosmonauts are adapted by @sciencemug from a Public Doamin image; Earth pic is a Public Domain one. (Source Wikimedia Commons)]
Here you can have a better look of the two docked spaceships:
|Soyuz 4 docks onto Soyuz 5|
In blue, the path of the two cosmonauts, the red circles indicate the handrails the cosmonauts grasp to make their space stroll.
So, on this day, January the 16th, of 1969, just a few months before the US bring their men to/on the Moon, the former Soviet Union (aka USSR, aka CCCP) gets to be the first to dock two manned spaceships and to transfer crew members (Aleksei Yeliseyev and Yevgeny Khrunov) from one (Soyuz 5, which commander is Boris Volynov) to the other one (Souyuz 4, which commander and only -before the docking- crew member, is Vladimir Shatalov).
In other words, two soviet spaceships make out and, after the french kiss, one gets two humans (well, I guess two humans are better than mononucleosis...)