James Patterson isn’t alone in his campaign to save the independent bookstores.

A couple of weeks ago, Mystery Scene wrote that #SaveIndieBookstores began on April 2 with a $500,000 donation from Patterson.

Supported by the Book Industry Charitable Foundation (Binc) and the American Booksellers Association (ABA), the campaign ends on April 30.

All the money raised will be given to independent bookstores, who are encouraged to apply for a grant.

For more information, visit #SaveIndieBookstores.

Now Rick and Becky Riordan have joined the #SaveIndieBookstores campaign. The Riordans have started a personal matching gift challenge. The couple will match each dollar raised, up to $100,000.

Riordan is the author of more than 20 novels for young readers, including the Percy Jackson series, the Kane Chronicles, the Magnus Chase series and the Trials of Apollo.

He also wrote the well-received private detective series about Tres Navarre, who was a third generation Texan with a Ph.D. from Berkeley in Medieval Studies and English who worked as an unlicensed private investigator. He also was a tai chi master.

Riordan’s first published novel—and Tres Navarre’s debut—was Big Red Tequila (Bantam, 1997). In this novel, Tres returns home to San Antonio to investigate the unsolved murder of his father, Bexar County Sheriff Jackson Navarre. Big Red Tequila won the Anthony Award for best original paperback and the Shamus Award for best First Private Investigator novel in 1997.

"Like most successful authors, I would not be where I am today without the support of independent booksellers. Their dedication, professionalism, commitment, and passion for books are as important for nurturing writers and supporting readers today as when I started publishing 25 years ago. Becky and I are eternally grateful to our indie bookseller friends. We're proud to help support them through this unprecedented challenging time," Riordan commented in a press release.