Sodium potassium tartrate tetrahydrate-NaKC4H4O6 center dot 4H(2)O known as Rochelle salt is a well-known ferroelectric. This paper deals with the following topics: (i) the Sankaranarayanan-Ramasamy method of growth of a parallelepiped-shaped single crystal of Rochelle salt having the (1 0 0), (0 1 0) and (0 0 1) planes mutually perpendicular to each other, (ii) evaluation of the second-order elastic stiffness constants C-11, C-22, C-33, C-44, C-55 and C-66 using the parallelepiped-shaped single-crystal sample of Rochelle salt, (iii) growth of large [0 1 1]-, [1 0 1]-and [1 1 0]-oriented cylindrical-shaped single crystals of Rochelle salt from appropriately prepared seeds using the same method, (iv) determination of elastic constants C-23, C-13 and C-12 using the [0 1 1]-, [1 0 1]-and [1 1 0]-oriented single-crystal samples of Rochelle salt, respectively, and (v) calculations of elastic compliance constants S-11, S-22, S-33, S-44, S-55, S-66, S-12, S(23)and S-13, Young's modulus E, bulk modulus K, Poisson's ratio t, linear compressibility beta(1), beta(2) and beta(3) along the three principal directions and volume compressibility b of the crystal. (C) 2017 Elsevier B.V. All rights reserved.