Hello, Shabbetai Tzvi!

While searching for something else I came across this interesting letter from the rabbis and parnassim of Amsterdam to Shabbetai Sevi. From the Ets Haim Library web site.

Here are a couple of other nice images:

1. From a 17th century calligrapher's sample book. You could commission something and choose the style of writing. As you can see, it includes a Hebrew sample as well:

2. Musical notation for the chorale singing of Befi Yesarim (בפי ישרים) in the synagogue.

By some coincidence, I see that the library was closed for the past two years due to renovations, but it is scheduled to be open to the public once again, possibly this Monday! (link)