watercolourworld.org

"Founded to gather documentary watercolours from public and private collections across the world onto a free geolocated database."

I found this reference in the 'Historic Houses' autumn magazine. There is a decent app. The King and Queen (UK) are patrons of TWW.

Not seen this mentioned on this Forum before but, having explored the website, felt that may be of interest to members.

Regards,

ScottW.