Tests and measurements are standardized instruments, such as questionnaires, inventories and scales, which are used to evaluate individuals, populations, or processes.
Finding the actual instruments is sometimes difficult because they are protected for some or all of the following reasons:
When looking for tests or test reviews, there are several questions to ask:
Children and teacher in an open-air school,
Allentown, Pennsylvania between 1900 and 1930.
Available at loc.gov.