Stanley Gibbons, the famous dealer in collectibles, has acquired an historically important archive of letters written by Albert Einstein.

The archive is a fascinating and important insight into the period when Einstein was challenging the foundations of Quantum Theory.

The archive contains extraordinary collection of letters written by Albert Einstein to Nathan Rosen - his collaborator and assistant at The Institute for Advanced Studies of Princeton University, USA. It was with Rosen and Boris Podolsky that Einstein wrote the famous EPR paper (Einstein-Podolsky-Rosen) "Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?" The paper was published in The Physical Review in 1935 and challenged the very foundations of Quantum Theory. It remains a seminal paper on the subject.

The letters, spanning the period between 1934 and 1941, discuss several theories of Quantum Mechanics and include references to Einstein's famous general theory of relativity, as well as his anger at the leak of the EPR paper to the New York Times in 1935, an event which ended his collaboration with Boris Podolsky.

Prof. Rosen later became the founder of the Institute of Physics at the world famous Technion University in Israel and is commemorated by a lecture series named after him there.

The letters (in German) are accompanied by full translations and technical explanations. The collection of sixteen items includes nine typed letters, six handwritten letters and one unsigned handwritten note. Thirteen are signed 'A. Einstein' and two 'A.E.' It is priced at GBP175,000.

In 1999 Einstein was named 'Person of the Century' by Time Magazine.

The archive can also be viewed at http://www.frasersautographs.com along with many other fascinating items.