Organizations:

Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC)

American Association for Laboratory Animal Science (AALAS)
American Committee on Laboratory Animal Diseases (ACLAD)
American Veterinary Medical Association (AVMA)
Animal Welfare Information Center (AWIC)
Centers for Disease Control (CDC)
Foundation for Biomedical Research
United States Department of Agriculture (USDA, APHIS)
Johns Hopkins Center for Alternatives

 Journals:

ILAR Journal 
Lab Animal 
Laboratory Animals 
AALAS Comparative Medicine and JAALAS
AVMA Journals

Animal Welfare Act Standards 
ILAR Guide for the Care and Use of Laboratory Animals (The Guide) 
AVMA Euthanasia Guidelines (2007)

Allied Laboratory Animal Care Consulting Services