What do Post-it Notes, the sitcom “Happy Days” and Hastings’ very own Rivertown Eye Care center have in common? They made their debuts in 1974.

The founder of Rivertown Eye Care, Dr. Joseph Slapnicher, was treating patients in Hastings when Walter Mondale ran for president, when the Minnesota Twins won their second and third World Series titles and when the Mall of America opened its doors. The only thing left to do now is celebrate a legacy-building career.

After 50 years and countless patients, Slapnicher has decided to retire, leaving his practice to his son, Dr. Eric Slapnicher, but not before a 50th anniversary and retirement party kicks off at noon on Friday.

“It’s been an incredible journey serving this community for five decades, and I’m proud to have built a practice that will continue to provide exceptional care for generations to come,” Slapnicher said in a company news release.

Since its inception, Rivertown has relocated within Hastings twice, having moved to its current location at 1011 N. Frontage Road in 2006.

Eric Slapnicher joined the team in 2002.

“Following in my father’s footsteps has been both an honor and a responsibility I take very seriously,” he said in the release.

“Our goal has always been to provide the best possible care to our patients, and we are grateful for the trust they’ve placed in us over the years.”

The optometry team at Rivertown grew in 2007 with the addition of Dr. Dena McGree, a graduate from the University of Minnesota-Duluth and Indiana University School of Optometry.

Friday’s 1970’s-themed celebration, which is open to all, will feature a DJ, drinks, prizes and giveaways from local community businesses and eyewear brands.

“We’re not just celebrating our history; we’re looking forward to serving our community for many more years to come,” Eric Slapnicher said.