Abstract Let π be a completely regular Hausdorff space, πΈ a quasi-complete locally convex space, πΆ(π) (resp. πΆ π (π)) the space of all (resp. all, bounded), scalar-valued continuous functions on π, and π΅(π) and π΅ 0 (π) be the classes of Borel and Baire subsets of π. We study the spaces π π‘ (π,πΈ), π Ο (π,πΈ), π Ο (π,πΈ) of tight, Ο -smooth, Ο -smooth, πΈ-valued Borel and Baire measures on π. Using strict topologies, we prove some measure representation theorems of linear operators between πΆ π (π) and πΈ and then prove some convergence theorems about integrable functions. Also, the Alexandrov's theorem is extended to the vector case and a representation theorem about the order-bounded, scalar-valued, linear maps from πΆ(π) is generalized to the vector-valued linear maps.