Lockdown laziness and an A10 restoration have delayed the addition of pics but 1924 is now complete (not completely complate, of course; new material will be added as it comes to hand). I’m indebted to my pal Francois who has sent me a wadge of wonderful illustrations from his extensive archive. A number of these have been included in 1924 and many more will be insterted into earlier, and later, years. Pics that cannot be dated accurately will be published in photo galleries sorted by decade. I hope you enjoy them as much as I did—this rather wonderful image might whet your appetite. Francois, I owe you a great many beers, mon ami; je vous remercie infiniment. And to my fellow motor cycle obsessives round the planet, let’s be careful out there.
Motorcycle Timeline 
I read through one of the pages a couple of weeks ago, and there was some mention of early Japanese motorcycle racing, but it was later than the Ueno park event listed here:
https://books.google.co.uk/books?id=Q473NKddjnAC&pg=PA24&lpg=PA24&dq=ueno+park+1901+motorcycle+race&source=bl&ots=7DyvcgdaYD&sig=ACfU3U1syGr8Xj7H5GGTUrEquDngVs-9sQ&hl=en&sa=X&ved=2ahUKEwipwqWE3dzuAhVOSsAKHUb_AwkQ6AEwD3oECBIQAg#v=onepage&q=ueno%20park%201901%20motorcycle%20race&f=false
With The Photograph:
https://thevintagent.com/2017/09/20/japanese-motorcycles-the-early-days/
https://tentenths.com/forum/showthread.php?s=cca0682f4c42e6d11bea799939441ae9&p=1610373#post1610373
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Thanks for that; that book looks like an excellent piece of work!
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