This digitised material is free to access, but contains information or visuals that may:<ul><li>include personal details of living individuals</li><li>be upsetting or distressing</li><li>be explicit or graphic</li><li>include objects and images of objects decontextualised in a way that is offensive to the originating culture.</li></ul>By viewing this material, we ask that you use the content lawfully, ethically and responsibly under the conditions set out in our <a href="https://wellcomecollection.cdn.prismic.io/wellcomecollection/d4817da5-c71a-4151-81c4-83e39ad4f5b3_Wellcome+Collection_Access+Policy_Aug+2020.pdf">Access Policy</a>.

University of Wisconsin, Madison

Galleries and Reading Room

Library

Shop

Café

Due to essential system maintenance, online requesting will be unavailable from 9pm until midnight on Tuesday 21 April. You can still search the catalogue as usual. We apologise for any inconvenience.

We're running paid user research studies to improve Wellcome Collection online

Take part in research

Correspondence regarding a lecture delivered at University of Wisconsin, Madison, 7 December, 1965, entitled "The Structure of the Genetic Code."

The lecture was organized by Dr H Gobind Khorana, from the Institute for Enzyme Research, to whom Crick wrote (22 November, 1965): "Thank you for your very interesting letter of 17th November. It is so full of fascinating news that I can hardly wait to come to Madison to hear more about it all. We seem to be getting closer to the altered sRNA in amber suppression, but I doubt if we will have anything very definite before I leave here ... I was especially fascinated by your remarks about GAA and about binding and wobble, and I am sure we shall find plenty of time to discuss all these topics fairly thoroughly."

Content advisory

University of Wisconsin, Madison

Licence and re-use