Gernsback download failure

Gernsback Volumes 6 and 7 appear to finish downloading but do not reach there indicated file size. The others are fine.
Get the following when I try to open. "There was an error opening this document. The file is damaged and could not be repaired." I'm not sure what I am doing wrong. Can anyone suggest alternative ways to obtain these two files? Thanks.

I am experiencing the same problem with volume 6. It downloads till anywhere from 100Mb to about 129MB then resets and tries again.

WA2BXY, let me know if you find a way. Last time was several months ago but still had the same issue.
Broadfoot - WA7JTB

I also am having the same problem. Tried different platforms and browsers with same result. Download fails after roughly 80% of file.