eSbírky.cz portal service is provided by National Museum in Prague.
In case of interest to join the portal, you can contact specific authorized persons:
Mgr. art. E. Stanková
eleonora.stankova@nm.cz
phone: 224 497 458
K. Hulanská
karolina.hulanska@nm.cz
phone: 224 497 349
For this specific task you can also use Contact form.