Yes, I do know that for some readers, James Herriot's later memoirs are seemingly not quite as enjoyable as his earlier stories, but that has really never been the case with and for me, as I for one have ALWAYS found both his earlier and his later veterinarian tales (his remembrances) equally readable and entertaining, equally delightful and often tenderly and emotionally poignant (but with also a critical and satirical eye towards both humanity and our domestic animals, our pets, with the author, with James Herriot also not ever sparing himself and his nearest and dearest with regard to humour and occasional criticisms).
And for me, personally, I have to say that the most delighful and sweetly entertaining episodes of The Lord God Made Them All (aside from of course the multitude of animal veterinarian care amd treatment stories both funny and sad, with both positive, successful and sometimes negative, sad and tragic outcomes) have been James Herriot's journal-like entries describing his voyages as a supervisory veterinarian to Russia and then later to Istanbul, and with especially the descriptions of his voyage by ship to Klaipeda, Russia, always having been one of my absolute favourite All Creatures Great and Small series sequences (and James Herriot's escapades travelling to Turkey, to Istanbul, on a clearly not all that air-worthy anymore cargo plane and almost getting stranded there, while perhaps not quite as engaging and as hunourously entertaining in description and depiction as the trip to Russia, these still do rank amongst my personal favourites, simply because the episodes so evocatively show how even in the 1960s, air travel was still a relatively novel and often difficult mode of transportation and thus not in any way as easy, as comfortable and yes as safe as it is now, and for both passenger and cargo services). Highly recommended, and although it has definitely always bothered me somewhat that the author obviously and with a rather heavy hand talked his daughter Rosemary out of becoming a veterinarian (unlike son Jimmy), I do indeed much appreciate that James Herriot (or rather of course Alfred Wight) is contrite and regretful with regard to this, that he takes personal responsibility for his behaviour and his actions and is candidly self critical about having basically in many ways bullied Rosie into giving up trying to beccome an animal doctor (so she became a people doctor instead).