File sizes for the books on PG, if this helps:
A Guide to the Best Historical Novels and Tales by Jonathan Nield. 142k
A Journey to the Western Islands of Scotland by Samuel Johnson. 341k
A Primary Reader by E. Louise Smythe. 67kb
All for Love; Or, The World Well Lost: A Tragedy] by John Dryden. 190k
An Inquiry Into the Obligations of Christians by William Carey. 116 kB
Beacon Lights of History by John Lord. Text of Vol. X-- Vol. XIV -- Vol 10 is 483 kB
Books and Bookmen by Ian Maclaren. 68 kB
Bramble-Bees and Others by J. Henri Fabre. 535 kB
Bulchevy's Book of English Verse by Sir Arthur Thomas Quiller-Couch 1.1 MB
Days with Sir Roger De Coverley by Joseph Addison and Sir Richard Steele. 80 kB
Discourses on Satire and on Epic Poetry by John Dryden. 362 kB
English Literature for Boys and Girls by H. E. Marshall. 1.1 MB
Essays of Elia and the Last Essays of Elia by Charles Lamb. Masque 31 kB
Chas & Mary Lamb 1.1 MB
Gooseberries from The Wife and Other Stories by Anton Chekhov. collection is 438 kB 9 stories, 48 kB average
Great Astronomers by Robert S. Ball 552 kB
Great Britain and Her Queen by Anne E. Keeling. 341 kB
Hereward, the Last of the English by Charles Kingsley. 924 kB
Home Geography for Primary Grades by C. C. Long. 116 kB
In the South Seas by Robert Louis Stevenson. 594 kB
Isaac Bickerstaff, Physician and Astrologer, by Sir Richard Steele. 261 kB
Lad: A Dog by Albert Payson Terhune. 472 kB
Life of Her Most Gracious Majesty the Queen (Victoria) by Sarah Tytler. Vol. 1 662 kB & 2 596 kB
London to Land's End by Daniel Defoe. 245 kB
Marie Antoinette and Her Son by L. Mühlbach. 1.2 MB
More English Fairy Tales by Joseph Jacobs. 345 kB
More Hunting Wasps by J. Henri Fabre. 463 kB
My Kinsman, Major Molineux by Nathaniel Hawthorne. one of 1/2 dozen stories 213 kB
Napoleon Bonaparte by John S. C. Abbott. 314 kB
Now It Can Be Told by Philip Gibbs. (Not PD for Europe) 1.0 MB
On the Art of Writing by Sir Arthur Quiller-Couch. 396 kB
Pioneers of the Old South: A Chronicle by Mary Johnston. 310 kB
Poems By a Little Girl by Hilda Conkling. 88 kB
Ponce de Leon by William Pilling. 1.2 MB
Quentin Durward by Sir Walter Scott. 1.0 MB
Redgauntlet by Sir Walter Scott - Time of George III. 1.0 MB
Guy Mannering by Sir Walter Scott - Time of George III. 1019 kB
Sesame and Lilies by John Ruskin. 279 kB
Sir Gibbie by George MacDonald. 1.0 MB
Tales of Troy by Andrew Lang. 512 kB
The Americanization of Edward Bok: The Autobiography of a Dutch Boy . 696 kB
The Battle of the Books by Jonathan Swift. 246 kB
The Bible in Spain by George Henry Borrow. 1.2 MB
The Book of Missionary Heroes by Basil Mathews. 388 kB
The Boys' Life of Abraham Lincoln by Helen Nicolay. 337 kB
The Coverley Papers, From 'The Spectator' by Addison, Budgell, and Steele. 352 kB
The Daisy Chain, or, Aspirations by Charlotte Yonge. 1.6 MB
The Diary of Samuel Pepys -- Complete 6.4 MB
The Discovery of Muscovy etc. by Richard Hakluyt. 229 kB
The English Constitution by Walter Bagehot. 576 kB
The Harwich Naval Forces by E. F. Knight. 175 kB
The History of King Charles II of England by Jacob Abbott. 337 kB
The Inspector General by Nikolai Gogol. 187 kB
The Life and Death of Cormac the Skald 121 kB
http://www.gutenberg.org/ebooks/265
The Life of Christopher Columbus by Edward Everett Hale. 333 kB
The Life of Horatio Lord Nelson by Robert Southey. 565 kB
The Life of the Fly, With Which Are Interspersed by J. Henri Fabre. 549 kB
The Little Shepherd of Kingdom Come by John Fox Jr. 513 kB
The Making of An American by Jacob Riis. 556 kB
The Mason-Bees by J. Henri Fabre. 375 kB
The Pursuit of God by A. W. Tozer. 178 kB
The Rights of Man by Thomas Paine. 559 kB
The Spirit of the Age; Or, Contemporary Portraits by William Hazlitt. 484 kB
The Story of the Champions of the Round Table by Howard Pyle. 687 kB
The Surgeon's Daughter by Sir Walter Scott - Fifeshire, Isle of Wight, and India (1780). 405 kB
The Wonders of Instinct: Chapters in the Psychology of Insects by J. Henri Fabre. 515 kB
Theodore Roosevelt's Letters to His Children by Roosevelt, ed. Joseph Bucklin Bishop. 248 kB
Unknown to History: Captivity of Mary of Scotland by Charlotte Yonge. 946 kB
Wild Animals I Have Known by Ernest Thompson Seton. 295 kB
William Harvey and the Discovery of the Circulation of the Blood by Thomas Henry Huxley. 64 kB