PostalCo products when I visited the USA earlier this year. I bought a little yellow reporters notepad with fine grid paper for my cross stitch designing on the go.
PostalCo on their product:
"We wanted a way to carry papers and documents that would function and age well. Some experimentation resulted in a series of document carrying envelopes made from pressed cotton and leather with an adjustable button closure."
Here are some other beautiful products they have.