I just tested the exact statement you suggested but I don't get the desired results.
Case No.1 above gives 01-10-2015 and 16-10-2015 as Min and Max dates respectively for ALL records. Case No. 2 gives the record-entry date for both the Min and the Max. The simplified Select statement I just tested also does as Case No. 2.
Anyway, I think I'll make a new copy and redesign the page anew and if I encounter the same problems again I'll contact this forum again.
Thank you for your attention.