The citation is ambiguous. It may mean:
27 Stat. 1021 (Pres. Proc. 24)
PROCLAMATION. Declaring benefits of international copyright extended to subjects of the German Empire. April 15, 1892 1021
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also:
27 Stat. 1018 (Pres. Proc. 23)
PROCLAMATION. Declaring lands ceded by Cheyenne and Arapahoe Indians, in Oklahoma, open to settlement. April 12, 1892 1018
Link is to an internal page within a statute beginning on page 1018.
You can view this U.S. Statutes at Large citation at these source(s):
PDF - https://govtrackus.s3.amazonaws.com/legislink/pdf/stat/27/STATUTE-27-Pg1018.pdf
also: