Last week's puzzle should have been fairly easy as there was a fair amount of text, punctuation and spacing were preserved, and it was monoalphabetic.
R'OD ITDHK TEXK WQ KWVEN AWRHA KFXWYAF IWUD WQ UN AXEHVEV'I TETDXI. KFDXD RI E SWK WQ UDUWXEBRSRE RH KFDXD, EHV R KFWYAFK R'V TDXRWVRPESSN TWIK IWUD WQ RK WHSRHD, ESWHA LRKF EHN IKWXRDI LFRPF EXD EIIWPREKDV LRKF KFDU
If you haven't yet solved it, you may like to try before reading on.
The solution is:
I'VE SPENT PART OF TODAY GOING THROUGH SOME OF MY GRANDAD'S PAPERS. THERE IS A LOT OF MEMORABILIA IN THERE, AND I THOUGHT I'D PERIODICALLY POST SOME OF IT ONLINE, ALONG WITH ANY STORIES WHICH ARE ASSOCIATED WITH THEM
This is some text which first appeared on this site about six weeks ago.