note: … annotated by W. L. Broun

note: …. W. L. Howarth

note: …. L. Clemens

note: Autograph note on card to W. T. H. Howe

note: … W. T. H. Howe

note: … at the Berg: William L. Reenan

note: Letter to W. T. H. Howe, Feb. 18, 1935.

collection: …. and George L. Duyckinck

collection: …. and George L. Duyckinck

note: … W. T. H. Howe

note: … Lyon for W. T. H. Howe

note: … in form of a letter to W

abstract: …. In unknown hand and G. W

note: … W. T. H. Howe

note: … W. T. H. Howe

abstract: … tour in G. W. Cable

note: … W. T. H. Howe

note: … Lyon as a letter to W

note: … W. T. H. Howe

note: … pages in S. L. Clemens

note: … W. T. H. Howe

note: … Notes quote a letter from Clemens to W

note: …, signed J. L. Clark

note: … W. T. H. Howe

note: … on books by S. L. Clemens

note: … when): S. L. C."…

note: …. 2 l.

collection: …. and George L. Duyckinck

note: … title-page to supplement of L

note: …. 2 l.; 1 p.; 1 p. …

abstract: … with additions in G. W. Cable's.

note: … W. T. H. Howe.

note: … by typescript note by L. S

note: …. L. Webster and Co

note: … of Horace L. Traubel, 1892

note: W. T. H. Howe

note: … by William L. Reenan, 1931. Privately for W. T. H. Howe

note: …, ed. Barbara L. Packer

note: … to W. T. H. Howe, March

note: …) ; Johnson, L., & Co, MS