John J. Hughes, ed. Speaking the Truth in Love: The Theology of John Frame. Phillipsburg, NJ: P&R Publishing, 2009.
More information on the book is available here, which includes a 31-page PDF. I’d recommend browsing the 5-page Table of Contents. There are about forty contributors, including J. I. Packer, Vern Poythress, James Grant & Justin Taylor, Paul Helm, Derek Thomas, Bruce Waltke, David Powlison, Wayne Grudem, and John Frame himself.