from the "pockets" portfolio (yes, nothing but pockets! and all gorgeous!)
Buttonholes I wish I could make (from the "Intuition" portfolio),
All sorts of detailing techniques on one piece (from the "Lingerie" portfolio), and:
bias application - I love those stripes! Possibly the most amazing portfolio is the one that is nothing but mending. It took me a few minutes to realize what it was, most of the mending is so amazingly clean. It's an incredible display of work!
I do actually have two very different sets of samples -- one is a class notebook from 1913 with some sewing samples and notes (very small, nothing like this) and the other is a 1950s Singer Sewing Center album of techniques with sewn samples. But these are astounding, and they'd be on their way to my house right now if I had that kind of money to casually toss around. I hope they go to a good home! (Preferably one that I can visit to see these in person, ha ha!)