NASA
Nasa Space Science Data Archive: Voyager 2 Pictures
This web page contains pictures and brief descriptions of the pictures that the Voyager 2 took.
CK-12 Foundation
Ck 12: Earth Science: Neptune
[Free Registration/Login may be required to access all resource tools.] Describes the features of Neptune.
NASA
Nasa Space Science Data Archive: Neptunian Satellite Fact Sheet
A pair of small tables of data that contain just about everything known about the moons of Neptune.
Australian Broadcasting Corporation
Australian Broadcasting Corporation: News in Science: Neptune Nabbed Its Moon
From ABC News in Science, Irene Klotz's article discusses research related to the possibility of Neptune having "nabbed" its moon, Triton, from some passing sister planets.
California Institute of Technology
Cal Tech: Cool Cosmos: Ask an Astronomer: How Many Moons Does Neptune Have?
Resource provides a brief answer to this question.