The name "Ratnakar" translates to "Mine of Jewels." True to its name, this compilation is a collection of precious stotras (hymns) dedicated to Lord Ganesha. It is not a single verse, but a comprehensive book that includes:

Check the official Gita Press online store or digital archives. They frequently update their catalogue and offer official e-books or PDFs for a nominal fee or free download.

: Some editions provide background on the significance of Ganesha worship and the history of Sanatana Dharma publications. Where to Find It