For this week's theme of trees, I have this FDC from 1973 with the slogan, 'Plant a tree in 73'. Although I like the slogan, the design of the FDC is not the most imaginative.
In 1974, there was a second stamp in the series, showing a horse chestnut tree (I will probably find that one in time for next week).
Next these 2 stamps from the US which have trees prominent in the design. 'The Legend of Sleepy Hollow' dates from 1974 and the 'First Civil Settlement Alta California' from 1977.
I'm participating in Viridian's Sunday Stamps, see more trees by clicking on the icon below.
Thanks for visiting.