While this is still in print, do not expect it to be easy to find, especially in the United States. You will probably have to order it directly from Hartland Trefoil.
1835 Start Packet Variant, by Todd Vander Pluym, was published in The Train Gamer's Gazette, volume 2, number 4. It changes the prices of some of the initial offerings, and allows advance bids (1830-style).
1835 Minor Variant, by Gary Norton, was published in The Train Gamer's Gazette, volume 1, number 2. It eliminates the private companies, adds nine more minor companies, and changes the way major companies are started.
Dane Maslen has also devised an alternate set-up procedure for 1835. Give each player the standard starting capital as prescribed in the rules. The procedure for selling the shares in the Initial Offering is then as follows:
On a player's turn he or she chooses any so far unsold share from the Initial Offering and puts it up for auction, with the printed price as a reserve price. The share goes to the highest bidder after a standard open auction. The difference between the price paid and the reserve price is then placed in a kitty. At any time a player can demand that the money currently in the kitty is shared out equally as far as it will go. The effect of all this is that the pool of money that the designer intended as being appropriate for the sale of
this initial parcel of shares is, as far as the bank is concerned, unaltered in size, which means that the same number of shares should be sold. Companies also still get the starting capital that he decided was appropriate. However, the recirculation of the money means that the pool is elastic sided and that the market determines the price paid for each share.
1847 - Set in the Pfalz/Saarland region of Germany. Early versions of 1847 were an expansion of 1835. The final version is an independent game which uses 1835 rules and parts.