MANCHESTER, VERMONT: Treat Williams' family, as well as the entertainment community, are still in mourning over his sudden death. The 71-year-old actor died in a motorbike accident on June 12. His wife, Pamela Van Sant, recently commemorated their 35th wedding anniversary in her first post since his death.

Williams was hit by a car while operating his motorcycle close to his house in Vermont on Route 30, according to Fire Chief Jacob Gribble, who spoke to PEOPLE. Investigators, according to Gribble, think the driver of the automobile didn't see Williams' motorcycle as it was turning and caused the collision. The actor received "critical injuries" and was flown to a hospital in Albany, New York, where doctors declared him dead. The inquiry is still being conducted, according to police.

Van Sant, 68, posted images of herself and Williams on the late 'Everwood and Hair' actor's Instagram Story on Sunday, June 25. Pam and Treat had been married since June 25, 1988. The relationship between the two remained rock solid through the years until death did part them.

'Happy anniversary honey! 35 years!'

Van Sant posted a picture of the pair on their wedding day in 1988 in her very first post. On their special day, The 68-year-old also uploaded a picture of herself grinning in the car. "Happy anniversary honey! 35 years," she inscribed over the image of her and her husband.

Following the wedding pictures, Van Sant — who has worked as both an actor and a producer — posted a more recent image of the pair cuddling in the snow.

This second picture posted by Van Sant was taken while they were out together during last winter, while another adorable throwback picture showed the couple at Christmas. The couple looks much younger in this festive picture, with Van Sant sitting on Williams' lap with their arms around each other.

The actor who is best known for American Masters 1985 also shared a more recent image of the couple laughing outside with their dog in her arms.

Van Sant wrapped up her ode with a picture of herself and her husband looking at each other as they are both wearing traditional Balinese wedding garb. "1st anniversary on location in Bali," she wrote over the photo in her Instagram story.

'Prayers for her to remain strong'

The Internet is in awe of the adorable pictures of Pam and Williams with one tweeting, "What a cute pic there awwwww." Others sent heartfelt messages for Pam. One fan wrote, "That’s lovely…prayers for her to remain strong …may he continue to watch over her .." Another claimed, "Thank you for sharing these beautiful Pics !!" "Ugh. How terribly sad for her but brave too," noted another user. One person said, "As a widow, I know how she is feeling. So sad for her."

Williams is survived by Van Sant and their two children, son Gill, 31, and daughter Ellie, 24.