Comparison of sizes of the definitive 1937 Palace of the Soviets design (red), the scaled-down version of 1948 (yellow), 1956 (blue), the completed Moscow State University building (green) and the Moscow International Business Center (as of 2019, grey).
Own work compilation. Source images for tracing: 

MIBC: File:Moscow City 2019.jpg by user:CommunistSquared (CC0)
MSU: File:2016-MSU.jpg by user:Ivtorov (CC-A-SA-4.0)
Outline of the Palace (simplified) except for the statue: Трофимов В. (Trofimov V.); Эривански А. (Erivansky A.) (1952). "Восемь вершин" [Eight summits]. Техника — молодёжи (5): 14–15.
Outline of the statue (simplified): File:Bauskizze des Palastes der Sowjets.jpg - claiming PD-Ukraine
Outline of the 1956 draft: Tkachenko, S. (2020). "1922–1956 годы. Нереализованные проекты развития центрального композиционного ядра Москвы на примере Аллеи Ильича" [Unrealized Projects of 1922–1956 for the Development of the Central Compositional Core of Moscow on the Example of Ilich Alley]. Academia. Архитектура и строительство (in Russian) (3, 4): 82–91, 50–55.
Height data:Khmelnitsky, D. (2007). Архитектура Сталина [Stalin's Architecture] (in Russian). Прогресс-Традиция. ISBN 5898262717, pp. 260, 287. More detailed tabular data was published in Эйгель И. Ю. Борис Иофан. — Стройиздат, 1978, pp. 116-117
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