Last time I walked across Manhattan, I was 65. I walked across the short way at 70 but I don't think I could walk all the way across the long way (42nd to 85th) now.
I purchased a lot of fillers in the past 20 years. I started with a large collection of Uncle Scrooge that had belonged to my older brother but the first 10 issues were missing (I bought and sold two copies of those early Scrooge books). My younger brother liked the Christmas Parade stories (Gold Key). I purchased all of the Dell Christmas Parade issues to complete that collection. I struggled to find all of the four color Donald Duck issues but found it easier to find the Donald Duck filler issues.