I'm still re-reading the canon, and possibly will have a finished chronology in a few weeks. I have to make some final decisions and figure out how I'll summarize the results. Some things still confound me, though. As an example of the problems, take the "Silver Blaze" horseracing story. The horse Silver Blaze is descended from a real horse named Isonomy, so with his age, and horse gestation taking a year, the earliest the tale could be is 1887. Then I noticed that the final horse race takes place in Winchester, not on Dartmoor where the stables were. In Trumbull's Chronology he posts this argument:
As Sherlockian Ernest Bloomfield Zeisler observed, between 1881 and 1903, the only time there was a race scheduled at Winchester was on Tuesday, July 17th, 1888. This places the beginning of the case on the previous Thursday, the 12th.
I thought, "Wow, that solves it! Hooray, something simple!" But then I asked myself, "is that true?" Why should Winchester, a town that used to have regular races every year, suddenly stop for decades and only have one in 1888? What is the source for Zeisler's observation? Did he have a newspaper account or some other historical document listing all the races in Winchester? Can I buy Zeisler's book and check his sources?
Of course I did an internet search on "Winchester horserace history" trying to find the source myself. Unfortunately, that only brings up a website talking about how Jane Austen attended races and died in Winchester. My searches also keep bringing up modern-day horserace sites, or other Winchesters not in the UK. The nearest result I can find is this City of Winchester article talking about the decline of horseracing in Winchester due to new Jockey Club rules about prizes, and it claims that the last race was in July 1887. This directly contradicts Zeisler! That website at least cites its source as a local newspaper, the Hampshire Chronicle. How did they find that, but Zeisler didn't? He thinks there were no races that year. And where is his source for 1888? So that's how frustrating and confusing chronology conundrums are. Do I follow Zeisler, or Winchester itself? Zeisler's Sherlockian book is rare and expensive where I can find it. One website lists his chronology for the stories, but it's only the dates, not the reasons or the evidence.
Meanwhile, I discovered an entertaining blog that goes through all 60 stories with An Observance of Trifles. Snell sometimes discusses differences in TV and movie adaptations too. You can go through his posts by dates starting in 2014, or you can look for the story titles themselves. On the right side menu, look for Labels, which lists each story, so you can directly get to that post. In his "Retired Colourman" post, I was glad to see I was not alone in wondering why Holmes believes Josiah Amberley's story so completely. Why are his clues like "we were" so flimsy? And why does he think the suicide attempt is "as good as a confession" of guilt? If not for the bodies being found, I would wonder if Holmes got the case completely wrong.