Mack: I treasure our friendship, and I know that other members of this esteemed board join me in wishing you the best and most special of birthdays.
Be well and take some time for yourself and your family.
Byll
whoo! Happy Birthday Mack!
Hi Bill,
That is totally reciprocal, and I’m sure everyone here will join me in wishing YOU the very best of this day, too!
Mack
For he’s a jolly good fellow!
Hope you both had wonderful birthdays!
… and many more to come.
Judy
happy birthday mack you cant hear but i just played you "happy birthday " on on of your whistles
Happy Birthday wishes from frosty Minnesota. Here’s to many more years of tooting and strumming. 
Here’s a “Happy Birthday!” comin to ya from the hills of old Arkansas…
And warm wishes for “Many More!” 
–James
Here’s a hearty “happy birthday” from the foothills of the smokies to a true gentleman.
reggie
Well, better late than never.
My best to you both–Mack and Bill.
Certain debts can never be re-paid, and there are few who set the generosity stakes as high as your august selves.
Be Well,
Tom D.
Belated birthday greetings to both you gentlemen.
It’s been a pleasure reading your comments. (And your poetry, Mack.) We are lucky that you grace this forum.
I haven’t had much time to spend online lately - but look what I missed! A chance to say “Happy Birthday” on time. Well hope your bithday was wonderful" .