rivers package:datasets R Documentation _L_e_n_g_t_h_s _o_f _M_a_j_o_r _N_o_r_t_h _A_m_e_r_i_c_a_n _R_i_v_e_r_s _D_e_s_c_r_i_p_t_i_o_n: This data set gives the lengths (in miles) of 141 "major" rivers in North America, as compiled by the US Geological Survey. _U_s_a_g_e: rivers _F_o_r_m_a_t: A vector containing 141 observations. _S_o_u_r_c_e: World Almanac and Book of Facts, 1975, page 406. _R_e_f_e_r_e_n_c_e_s: McNeil, D. R. (1977) _Interactive Data Analysis_. New York: Wiley.