Last week in Yesterday Once More we carried a postcard showing Gillygate in 1910. Tramlines were clearly visible - and one of them seemed to curve in the middle of the street. Could anyone explain why, we asked?

Step forward reader Brian Johnson.

"The curving tram lines in Gillygate will be because the route was single track, with passing places," he writes. "This was not unusual. I don't know York's details, but I remember sitting on the front seat upstairs on a tram in Gateshead, watching another tram approach along the single line. When it came alongside us, we were able to use the track it had left."

Many thanks, Mr Johnson.