Otto Frisch describes Niels Bohr's interest in his paper with George Placzek.

Weiner:

Did Bohr get involved much in this work? Did he take much interest in this?

Frisch:

No, not really. I think Bohr was quite pleased, but he didn't take any great interest. These were quantitative measurements which didn't affect his deliberations very seriously. The work which I did with Placzek was quite different. Bohr took a passionate interest in that, and he pressed us to publish at once and so on. He was obviously very keen on that. It was a glorious occasion when we actually wrote that paper at about two in the morning.

Placzek, I think, assumed that I would be too sleepy to finish the work because he didn't want to write it in such a hurry, but for once I actually managed to keep awake until four; and then Placzek issued a sort of declaration that under passionate protest he would allow me to take that paper to the mails. I took the paper to the mails at four in the morning. I wanted to make sure it wouldn't get delayed again the next day. And Placzek said, "Shall we phone Bohr?" And I said, "Well, Bohr is having dinner with the King." So Placzek said, "Let's look up the King." We looked up the Royal Palace in the phone book, but there were so many phone numbers we didn't know which one to phone.