Reference Sheets for Algebra
Algebra Cheat Sheet from Paul Dawkins – http://tutorial.math.lamar.edu/pdf/Algebra_Cheat_Sheet.pdf (includes logs, conics, and common algebraic errors)
Algebra – Things to Remember from Regents Exam Prep Center – http://www.regentsprep.org/Regents/math/ALGEBRA/FormulaSheetAlgebra.pdf (also includes some geometry, probability, and statistics)