That would be National Indemnity and Life, p10. "Let’s look first at insurance, Berkshire’s core operation. That industry has been the engine that has propelle

That would be National Indemnity and Life, p10. "Let’s look first at insurance, Berkshire’s core operation. That industry has been the engine that has propelled our expansion since 1967, when we acquired National Indemnity and its sister company, National Fire & Marine, for $8.6 million. Though that purchase had monumental consequences for Berkshire, its execution was simplicity itself. Jack Ringwalt, a friend of mine who was the controlling shareholder of the two companies, came to my office saying he would like to sell. Fifteen minutes later, we had a deal. Neither of Jack’s companies had ever had an audit by a public accounting firm, and I didn’t ask for one. My reasoning: (1) Jack was honest and (2) He was also a bit quirky and likely to walk away if the deal became at all complicated. On pages 128-129, we reproduce the 11⁄2-page purchase agreement we used to finalize the transaction. That contract was homemade: Neither side used a lawyer. Per page, this has to be Berkshire’s best deal: National Indemnity today has GAAP (generally accepted accounting principles) net worth of $111 billion, which exceeds that of any other insurer in the world."