Tax Analysts has released an Internal Revenue e-Code & Regs. From the press release:

“With our e-book, tax professionals will no longer have to dig through a printed book or even tap the Internet,” said Christopher E. Bergin, Tax Analysts president and publisher. “Our e-book will enable them to keep the information they need at their fingertips, wherever they go.”

The Internal Revenue e-Code & Regs, which costs $50 for a one-time purchase or $100 for an annual subscription with quarterly updates, is available for PCs and Macs using Adobe® Digital Editions.

The e-book is a total e-solution. You can bookmark and make notes within each update of it. The e-book provides extensive linking within and between the code and regulations. It also includes historical notes that link to every corresponding amendment dating back to 1993 – with pre-1993 amendments available for every code section.