For information on aid appeals, visit the U.N.'s ReliefWeb site. It also offers maps showing everything from snow cover to camp locations.

A Fritz Institute report, Surviving the Pakistan Earthquake: Perceptions of the Affected One Year Later, looks at the effectiveness of the relief operation. It's based on a survey of more than 600 households in the worst-affected areas.

In the week after the quake, AlertNet spoke to aid workers in the region about what they were seeing and hearing on the ground. You can read their views here.

U.N. news service IRIN has some news on its Pakistan page.

Aid agency Oxfam has information on its response, interviews with survivors, accounts of life in the camps, photos and situation updates.

The International Organisation for Migration, which oversaw the provision of shelter, and Islamic Relief, an aid agency already active in the region when the quake struck, also have information on their operations.

The World Food Programme, which mounted the largest helicopter relief operation in the U.N.'s history, carries updates on its website.

The United States sent helicopters and troops to the quake zone, mounting its biggest-ever humanitarian relief operation. For more on U.S. assistance, see this 2006 USAID factsheet.