letters (correspondence)

Hanson writes that he has announced to the press and government that yellow fever has been eradicated along the coast.

Hanson discusses the political situation in Peru and his difficulties in dealing with local authorities.

Hanson updates Carter on his search for material for Carter's yellow fever book. The Peruvian health authorities have suggested he stay after the end of campaign, but he is uncertain what he will do.

Hanson discusses yellow fever cases in Peru.

Hanson requests that Carter critique his preliminary report on the yellow fever campaign in Peru. He asks if his resume describing his work in 1921 and 1922 has been received.

Hanson offers to send Carter memorabilia of the yellow fever campaign in Peru. He plans to arrive in New York soon.

Hanson discusses financial matters and his feelings towards the International Health Board. He comments on Connor and Cumming.

Hanson writes about resuming his yellow fever work in Mexico. He discusses the ramifications, both personal and financial, that such a decision would entail. He comments on the political situation in Mexico.

Hanson discusses his career options in Peru and Africa. He mentions the possibility of leaving public health.

Hanson gives an account of his trip to Panama. He mentions a modification of quarantine process. He describes sanitary inspections to various regions of Peru [lists names of personnel]. He expresses concern about the government's funding of workers. The yellow fever campaign is going well, but vigilance is required.

Hanson writes about the inappropriate handling of vaccine.

Hanson discusses outbreaks of yellow fever in Peru, and his dealings with the Peruvian government. He requests the use of International Health Board funding.

Hanson discusses a yellow fever outbreak on the frontier of Peru. He states that yellow fever cases are declining elsewhere.

Hanson discusses funding issues and a recent yellow fever outbreak.

Hanson discusses the spread of yellow fever in Peru, and the use of fish to control mosquitoes. He also discusses funding issues.

Hanson discusses financial affairs and describes various yellow fever cases.

Hanson discusses funding and reports on yellow fever cases. He requests more inspectors.

Hanson discusses funding and the use of fish in breeding areas. He lists the people in charge of various locations, and has hopes of soon eliminating yellow fever on the coast.

Hanson reports on the yellow fever work in South America. He discusses the irregularity of mail, the effective use of fish for mosquito control, the yellow fever risk of Lima's poorer areas, and public health personnel. Hanson thanks the International Health Board for all of its support to the campaign.