I went to Chicago over the weekend to visit my parents, for whom travel is harder. Mom has some medical complaints that are not yet diagnosed; various tests upcoming. We walked along the lake, and I taught Mom how to Uber, and we did some research into the time when they were taking the Siberian railroad across from China through Mongolia, through Siberia, to Moscow. They got their visas at the Soviet embassy in Beijing around 8/15/91, and in between then and when they took the train out, well,
I'll let you read the version of the story that Dad wrote and I edited. We pored over his journals from that time, along with googling the events. Pretty fun, though Dad got tired and discouraged by the end of our session.