Thursday, October 24, 2019

Marietta and Kirtland, Ohio, October 14-17, 2019

During the past few years as we've visited our son's family in Mount Airy, Maryland, we have taken small day trips (sometimes 3- or 4-day trips) to see places of historical significance.

This year we flew to Maryland on Tuesday, October 8.

In the interest of privacy, I won't show lots of photos of them and their small children, with whom we visited until through Sunday, October 13.

Saturday, June 8, 2019

Yellowstone and Grand Teton National Parks

At the invitation of my daughter, we went with them to visit Yellowstone and Grand Teton National Parks. The visit stretched from May 30 to June 1, 2019.

We actually traveled to West Yellowstone, Montana, on May 29.

I was outnumbered by female relatives:

Monday, April 29, 2019

Pipe Organ Mutations and Arithmetic


This post shows how to use arithmetic to predict what pitch 2 2/3', 1 3/5', and 1 1/3' stops will sound relative to the fundamental 8' pitch. (It also works for 5 1/3' and other mutations.) If you hate arithmetic, already understand mutations, or are bored with organs, this is probably tl;dr (too long, don't read).