The Foundation does NOT ask for Letters of Recommendation or a list of referees to accompany the proposal. The application is evaluated on its own merit. Please do NOT send any recommendations to the Foundation, they will not alter the outcome of your application.
Wenner-Gren grants and fellowships are not subject to US taxes if you are: 1) not normally subject to US taxes by nature of your citizenship or tax residency status and 2) 100% of the research or conference/workshop activities funded by Wenner-Gren is conducted outside the US. However, there may be tax implications in your country of citizenship or tax residence, and you should seek advice from an appropriate tax advisor.