The last camera I purchased (Nov. 2012) was an Ansco Memo 35mm 1/2-frame from about 1927. I believe it's the 3rd version with the plate behind the shutter release. A friend of mine, I recently discovered, had the D-shaped film cartridges I had been searching for for several months. I couldn't believe my luck, so, I purchased 2 of them and will soon be trying out this little beauty very soon.