Government and educational sites dedicated to preserving Indian manuscripts. A Note of Caution
Identify your hidden strengths and potential weaknesses.
While Samudrik Shastra is a fascinating science, it should be studied with a balanced mind. A single mark or line does not define a person's entire life. The ancient texts always emphasize that "Karma" and "Purushartha" (individual effort) can modify the lines on one’s palms and the destiny written on one's face.
Many government-funded libraries have digitized rare Sanskrit manuscripts. You can search their database for "Prachin Samudrik" to find high-quality scans.