I too had the great fortune of working in Dr. Tyberg's lab and I feel very lucky to have benefited from his mentorship. I heard someone say that choosing your supervisor is one of the most important choices in life and I would agree that I hit the jackpot. I will truly miss talking about all aspects of the cardiovascular system and the celestial design committee with Dr. Tyberg.

I want to send my condolences to all of Tyberg family.

I have many memories of John at Elim in Minneapolis, and especially how gracious he was. Our paths did not often overlap, but we did share one special event which was a milestone for both of us - U.of M. Commencement on December 16, 1967. It was really nice to have another "Elimite" there. My sympathy to all of John's family and friends, especially Rod and Ruth, and Jim and Caryl.

I had the great fortune of doing my PhD studies (1985-1989) at U of Calgary, Foothills. It was a wonderful environment and John was a central figure. I have just finishing watching the wonderful memorial tribute for John provided by the Libin and U of Calgary. The speeches and testimonies were so true and sincere. They all highlighted how John touched clearly many people in many positive ways. For myself, every interaction with John was positive and I cannot think of many people for whom I can say that. He set the highest standards in every aspect of life. He has left an incredible legacy that will live-on in all of us.

My condolences to Naomi, Anna, Pieter, Phillip, Jack and others in the Tyberg family.

Condolences to Naomi and the family. John was a remarkable soul and will be deeply missed.

Livia and Marcello Fiorini

Just wanted to reach out Naomi and family, and let you know that you have my heartfelt condolences during this difficult time. I will never forget my friend, teacher, colleague, and the best scientist.

I was very sorry to hear of Dr. Tyberg's passing. He was an incredibly brilliant man with a kind heart, and mentored my father in cardiology. John and Naomi invited myself and my sisters over to visit them many times. They were gracious hosts with amazing stories. He has left the world a better place through his work and his heart for others.

I first met John at a NASA meeting in Dallas, and he was a mentor and guiding light for the past 25 years. His insight about physiology was remarkable, and I hope he didn't get tired of me sending him challenging questions over the years. His obituary does not capture his contribution to cardiovascular science which was legendary. I will personally miss him, as will our community. Condolences to his friends and family.

Ben Levine

John Tyberg had been a particular friend of our parents for many years and also had been our favorite Sunday school teacher back in Minneapolis. Therefore, last fall, after a decent interval from our last contact with him (fifty years) we decided to get in touch. John greeted the return of these prodigal students with enthusiasm (for John) and we then began a wide ranging and stimulating bimonthly zoom-fest with John and Naomi. That pleasurable habit has been brought to a halt way too soon. John was a deep river of intelligence, learning and kindness.

Mark and Idella Moberg Greg and Kristin (Moberg) Carey

I was employed in the Tyberg lab in the early 80’s and have fond memories of my experiences there. John will be remembered as a kind, considerate and a caring person, with such a huge effect on so many people. He will be dearly missed. My deepest sympathy go out to Naomi, Anna, Pieter and the family.

R.I.P. cousin.

I was so blessed to have worked for John from 2001 - 2005 as his admin. He was a truly wonderful man, so kind, thoughtful and caring. He was supportive and always wanted the best for everyone. I will always remember him coming in to the office in the morning and stopping to say hello and ask how I was. I will always remember his warm smile and gentle voice. I have thought about him often and was so saddened to hear of his passing. My thoughts are with Naomi and Anna and the rest of the family.

I only met John once, when he was an examiner for a graduate student's defence and I was neutral chair. However he made an impact even with such a brief encounter. As a colleague in the CSM I saw him in the hallways and we always said hello after that. He was exactly as described: a true gentleman, soft-spoken, polite, inquisitive with his questions to the student, but also pushing them to think through the answers, and think beyond their own project. A true clinician-scientist with broad interests outside of medicine. My condolences to his family and mentees.

I am so deeply saddened to hear of John’s passing. He was such a great mentor and friend to me. I would not be where I am today without him. My thoughts and prayers go out to Naomi and the rest of John’s family. Sincerely, Gregg Nelson (PhD 1995-1999)