Law librarians embraced the notion of using temporary or contract help for staffing decades ago. My first library job was with a looseleaf filing service in New York. We hire temps to catalog our materials, take on reference overflow, cover maternity leave. Hiring consultants to manage specific projects is an extension of this long-standing practice.
The following list highlights some of our specialities, and we'd be happy to discuss any other type of project you might need tackled.