- Publication Series: Library of Progress Pub. Series Record # 5528
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Note: Copyright page #26 shows at bottom (quote): Library of Progress. No. 26. Quarterly. $1.00 a year. February, 1898. Entered at the Postoffice, Chicago, as second-class matter. Copyright page #36 shows at bottom (quote): Library of Progress, No. 36 Quarterly, $1.00 a year November 15, 1900. Entered at the Postoffice, Chicago, as second-class matter. Title pages show 1898 and 1901 respectively.

