Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.

Correspondence, notes, professional papers, and subject files relating to Stifel's work in economics and agriculture, with particular reference to Africa, Nigeria, Thailand, and the Philippines.