I have updated around 30 scans from my E-Library in concordance with the scan optimization method I have written about in April [#see this post about my scan optimization method].
Old huge scans (20-100MB) had been replaced with compact 2-10MB versions of better quality. Besides, OCR-txt-layer had been added to the majority of the updated scans.
You can find the update list below. I will update the rest of my E-Library in the course of summer-2019, further update notifications will appear in my blogs.
List of updated scans (06-June-2019):