Letter dictated by Sherlock Holmes

Letter dictated by Sherlock Holmes, written by Colonel Valentine Walter and sent to Hugo Oberstein

“DEAR SIR:
“With regard to our transaction, you will no doubt have observed by now that one essential detail is missing. I have a tracing which will make it complete. This has involved me in extra trouble, however, and I must ask you for a further advance of five hundred pounds. I will not trust it to the post, nor will I take anything but gold or notes. I would come to you abroad, but it would excite remark if I left the country at present. Therefore I shall expect to meet you in the smoking-room of the Charing Cross Hotel at noon on Saturday. Remember that only English notes, or gold, will be taken.