Advice from Eras Gone By

When going through some papers recently, I found this document tucked into an old book.  Published by the Zootrition Company, it contains 105 suggestions for zoo directors on how to run their facilities.  Some of them are very valid bits of advice to this day.  Others are a bit... dated.  I mean, who paints with lead paint anymore?  Still, it's fascinating to get a glimpse into the thought process of what was considered revolutionary or cutting edge, even half a century ago.