Please make note of recent introductory works on historical theory and philosophy of history (in Finnish), edited by Väyrynen and Jarmo Pulkkinen.
Philosophy of History. Classical Thinkers from Antiquity to Foucault (2015, Vastapaino). The book includes chapters by Väyrynen.
Theory of History. From Linguistic Turn to Possible History (2016, Vastapaino). The book includes chapters by Väyrynen, Pihlainen, Kuukkanen, and Lähteenmäki.