Holmes, Doyle, & Friends:

March 24 and 25, 2023

  • Our registration fee (includes luncheon) is unchanged, despite record inflation! The hotel (see below) has pledged also to keep rates unchanged.
  • DATEFriday evening through Saturday evening, March 24 and 25.
  • PLACE: The Airport Clarion Inn, Dayton Ohio … convenient to Interstate Highways 70 and 75, and, of course, to the Dayton Airport (free airport shuttle).
  • Click on the button above for “traditional​” registration. (Print the form, fill it out, mail it to the address shown on the form with your cheque or money order. The postal authorities frown on sending gold or notes by the mails.)​​
  • We regret to say that we cannot offer on-line registration for 2023. This is not due to technical problems. Please bear with us for this year and use our downloadable legacy Registration Form. Legacy? That means “old-fashioned”: download the Form, print it, fill it out, and mail it with your cheque or money order to the address given at the bottom of the Form, just as all attendees did until 2014, when on-line registration was first offered.
  • HD&F vendor space has sold out. However, please check this site frequently. A cancellation may make space available, as it did last year.
  • The block of rooms reserved by the Clarion Inn for HD&F has now also sold out. However, staff inform us that a Senior Discount will provide a nearly identical room rate if you qualify for it. Inquire when registering.
  • The early registration discount has expired.


Dan Andriacco, BSI, our genial Program Chairman, introduces a speaker at the 2022 HD&F.

Although there is a free shuttle available between the hotel and the Dayton Airport, we regret that we cannot offer shuttles from either London’s Paddington or Dayton’s Union Stations. Please take a hansom equipped with Mr. Wells’ time travel apparatus.

New! ------------

Tap or click on the buttons to the right for programmes from previous Conferences.

Last revised: 28 Feb. 2023


There is a time-worn adage among engineers: “When all else fails, read the directions!” The following suggestions assume that you are still having problems despite having read and followed the instructions.

Are you having problems with your “smart” telephone? One quick fix (this may also apply to small tablets) is to use landscape rather than portrait mode. Landscape mode is where you hold your instrument with one of its long sides up. Portrait mode — instinctive with most people — is when you hold the instrument with one of its short sides up, as you would a book. In this case, going against your instincts might produce better results. Best of all is to throw over your telephone in favour of a desktop computer or a larger tablet.

If you find that Pay Pal is balky, merely trying again will often solve things. Our agent for commercial transactions is a company whimsically called “Pay Pal.” In 2021, Pay Pal made improvements in its programming. These alleged improvements occasionally give rise to minor problems.

Does the Web site “lock up” at any point? One trick that frequently solves difficulties is to change your browser. As you may know, having access to the Internet is not enough. Much of the content of the Internet — most, if you do not count wires (e-mails) — will appear on your screen as gibberish. A program called a “browser” is needed to change this gibberish into language and images. Browsers are given away free by the companies that publish them. The most popular browser is Chromeby the Alphabet Company, makers of the Google search engine. (Chrome runs on almost any digital device.) Another popular browser is Edge, published by the Microsoft Corporation (Edge runs on machines using the Windows and Apple operating systems.) Yet a third is Safari, which comes with devices manufactured by the Apple Company. (Safari works on both Windows and Apple’s operating system.)