Back then folks had more time on their "hands"

Seriously, I think I can do this with Photoshop! (OK, not serious, sorry) I've seen this work before. It's quite valuable and very famous amongst collectors.
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Ross
http://orchids-ross.blogspot.com/
I don't do most Dendros or large, "floofy orchids". For me it's minis (like Angraecoides), Masdies, Paphs, and others that crept in somewhere along the line. See my orchid list for complete collection (usually not current.)