Missing book Mustadrak Al Hakim (a.k.a. Mustadrak ala al Sahihayn)

[wakqasahmed]

Assalamu Alaikum Warahmatullah,

Needed a hadith from this book today but couldn't find it. What is procedure to add a new hadith book to this project?

Would love to see more books like the one mentioned.

Jazakumullahu khairan