NGOs, monitors, pressure groups
Genetics, personality characteristics, lifestyle & career choices, economic status, & luck are just some of the factors which determine when (if at all) individuals encounter the disadvantages of age - real (reduced mobility, impaired capacity, fraility, etc) or perceived (ageism).
NatCen's ELSA (see below) looks at the experience of those 50 years and older.
International bodies such as the UN & WHO make the qualification for older as 60 years and over.
Some of the subject searches which should find useful texts in SOLO.
Older people -- Legal status, laws, etc
Older people - civil rights
Age discrimination in employment -- Great Britain
Older people -- Employment -- Government policy -- Great Britain
Older people -- crimes against
Older people -- Abuse of
Older people -- Social conditions
Social work with older people
Older people -- Care
Older people -- Services for -- Government policy -- Great Britain
Social service -- Government policy
Caregivers -- Legal status, laws, etc. -- Great Britain
Public welfare -- Law and legislation -- Great Britain
Community health services -- Law and legislation -- Great Britain
Capacity and disability
Older people -- Finance, Personal
Retirement -- Great Britain -- Planning
Tax planning -- Great Britain
Estate planning -- Great Britain
Terminal care -- Law and legislation
Terminal care -- Moral and ethical aspects
Right to Die -- Law and legislation
Right to Die -- Moral and ethical aspects
Euthanasia -- ethics
Suicide, Assisted -- ethics
Death -- Moral and ethical aspects; ; Ethics, Medical;
Wills - Great Britain
Inheritance and succession - Great Britain
Population aging -- Social aspects
Population aging -- Economic aspects
Population aging -- Health aspects
As interdisciplinary topic you may need to move away from the "normal" range of law journals!
Journal of adult protection - issues can be requested from Stacks, or from v 16 2014 can be read online as eLD provided you are logged into a Bodleian Library Computer.